Home / 1,211,472,834.10-1,817,209,251.15-921,235,189.30

Finding the Fourth Proportional to 1,211,472,834.10, 1,817,209,251.15 and 921,235,189.30

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Solution

The fourth proportional to 1,211,472,834.10, 1,817,209,251.15 and 921,235,189.30 is: 1,381,852,783.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,472,834.10 : 1,817,209,251.15 = 921,235,189.30 : x
  2. Step 2: Convert to fraction form
    1,211,472,834.10/1,817,209,251.15 = 921,235,189.30/x
  3. Step 3: Cross multiply
    1,211,472,834.10x = 1,817,209,251.15 × 921,235,189.30
  4. Step 4: Simplify right side
    1,211,472,834.10x = 1,674,077,108,480,881,408
  5. Step 5: Solve for x
    x = 1,674,077,108,480,881,408/1,211,472,834.10
  6. Step 6: Final answer
    x = 1,381,852,783.95

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.