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Finding the Fourth Proportional to 521,424.88, 719,194.55 and 478,542.55

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Solution

The fourth proportional to 521,424.88, 719,194.55 and 478,542.55 is: 660,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,424.88 : 719,194.55 = 478,542.55 : x
  2. Step 2: Convert to fraction form
    521,424.88/719,194.55 = 478,542.55/x
  3. Step 3: Cross multiply
    521,424.88x = 719,194.55 × 478,542.55
  4. Step 4: Simplify right side
    521,424.88x = 344,165,191,506.94
  5. Step 5: Solve for x
    x = 344,165,191,506.94/521,424.88
  6. Step 6: Final answer
    x = 660,047.51

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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.