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Finding the Fourth Proportional to 521,542.92, 719,841.52 and 317,661.06

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Solution

The fourth proportional to 521,542.92, 719,841.52 and 317,661.06 is: 438,440.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,542.92 : 719,841.52 = 317,661.06 : x
  2. Step 2: Convert to fraction form
    521,542.92/719,841.52 = 317,661.06/x
  3. Step 3: Cross multiply
    521,542.92x = 719,841.52 × 317,661.06
  4. Step 4: Simplify right side
    521,542.92x = 228,665,620,275.21
  5. Step 5: Solve for x
    x = 228,665,620,275.21/521,542.92
  6. Step 6: Final answer
    x = 438,440.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.