Home / 748,865.20-1,123,297.80-430,000.60

Finding the Fourth Proportional to 748,865.20, 1,123,297.80 and 430,000.60

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Solution

The fourth proportional to 748,865.20, 1,123,297.80 and 430,000.60 is: 645,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,865.20 : 1,123,297.80 = 430,000.60 : x
  2. Step 2: Convert to fraction form
    748,865.20/1,123,297.80 = 430,000.60/x
  3. Step 3: Cross multiply
    748,865.20x = 1,123,297.80 × 430,000.60
  4. Step 4: Simplify right side
    748,865.20x = 483,018,727,978.68
  5. Step 5: Solve for x
    x = 483,018,727,978.68/748,865.20
  6. Step 6: Final answer
    x = 645,000.90

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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.