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Finding the Fourth Proportional to 552,359.30, 762,248.60 and 310,641.80

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Solution

The fourth proportional to 552,359.30, 762,248.60 and 310,641.80 is: 428,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,359.30 : 762,248.60 = 310,641.80 : x
  2. Step 2: Convert to fraction form
    552,359.30/762,248.60 = 310,641.80/x
  3. Step 3: Cross multiply
    552,359.30x = 762,248.60 × 310,641.80
  4. Step 4: Simplify right side
    552,359.30x = 236,786,277,151.48
  5. Step 5: Solve for x
    x = 236,786,277,151.48/552,359.30
  6. Step 6: Final answer
    x = 428,681.62

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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.