Home / 1,178,229.40-1,767,344.10-430,178.20

Finding the Fourth Proportional to 1,178,229.40, 1,767,344.10 and 430,178.20

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Solution

The fourth proportional to 1,178,229.40, 1,767,344.10 and 430,178.20 is: 645,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,229.40 : 1,767,344.10 = 430,178.20 : x
  2. Step 2: Convert to fraction form
    1,178,229.40/1,767,344.10 = 430,178.20/x
  3. Step 3: Cross multiply
    1,178,229.40x = 1,767,344.10 × 430,178.20
  4. Step 4: Simplify right side
    1,178,229.40x = 760,272,903,718.62
  5. Step 5: Solve for x
    x = 760,272,903,718.62/1,178,229.40
  6. Step 6: Final answer
    x = 645,267.30

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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.