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Finding the Fourth Proportional to 508,443.60, 762,665.40 and 402,155.40

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Solution

The fourth proportional to 508,443.60, 762,665.40 and 402,155.40 is: 603,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,443.60 : 762,665.40 = 402,155.40 : x
  2. Step 2: Convert to fraction form
    508,443.60/762,665.40 = 402,155.40/x
  3. Step 3: Cross multiply
    508,443.60x = 762,665.40 × 402,155.40
  4. Step 4: Simplify right side
    508,443.60x = 306,710,009,003.16
  5. Step 5: Solve for x
    x = 306,710,009,003.16/508,443.60
  6. Step 6: Final answer
    x = 603,233.10

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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.