Home / 521,531.30-782,880.15-403,724.90

Finding the Fourth Proportional to 521,531.30, 782,880.15 and 403,724.90

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Solution

The fourth proportional to 521,531.30, 782,880.15 and 403,724.90 is: 606,038.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.30 : 782,880.15 = 403,724.90 : x
  2. Step 2: Convert to fraction form
    521,531.30/782,880.15 = 403,724.90/x
  3. Step 3: Cross multiply
    521,531.30x = 782,880.15 × 403,724.90
  4. Step 4: Simplify right side
    521,531.30x = 316,068,210,270.74
  5. Step 5: Solve for x
    x = 316,068,210,270.74/521,531.30
  6. Step 6: Final answer
    x = 606,038.81

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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.