Home / 1,211,472,835.60-1,817,209,253.40-921,235,190.80

Finding the Fourth Proportional to 1,211,472,835.60, 1,817,209,253.40 and 921,235,190.80

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Solution

The fourth proportional to 1,211,472,835.60, 1,817,209,253.40 and 921,235,190.80 is: 1,381,852,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,472,835.60 : 1,817,209,253.40 = 921,235,190.80 : x
  2. Step 2: Convert to fraction form
    1,211,472,835.60/1,817,209,253.40 = 921,235,190.80/x
  3. Step 3: Cross multiply
    1,211,472,835.60x = 1,817,209,253.40 × 921,235,190.80
  4. Step 4: Simplify right side
    1,211,472,835.60x = 1,674,077,113,279,474,432
  5. Step 5: Solve for x
    x = 1,674,077,113,279,474,432/1,211,472,835.60
  6. Step 6: Final answer
    x = 1,381,852,786.20

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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.