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Finding the Fourth Proportional to 499,233.70, 748,850.55 and 420,210.10

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Solution

The fourth proportional to 499,233.70, 748,850.55 and 420,210.10 is: 630,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,233.70 : 748,850.55 = 420,210.10 : x
  2. Step 2: Convert to fraction form
    499,233.70/748,850.55 = 420,210.10/x
  3. Step 3: Cross multiply
    499,233.70x = 748,850.55 × 420,210.10
  4. Step 4: Simplify right side
    499,233.70x = 314,674,564,500.56
  5. Step 5: Solve for x
    x = 314,674,564,500.56/499,233.70
  6. Step 6: Final answer
    x = 630,315.15

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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.