Home / 521,592.10-719,968.17-306,721.78

Finding the Fourth Proportional to 521,592.10, 719,968.17 and 306,721.78

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Solution

The fourth proportional to 521,592.10, 719,968.17 and 306,721.78 is: 423,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,592.10 : 719,968.17 = 306,721.78 : x
  2. Step 2: Convert to fraction form
    521,592.10/719,968.17 = 306,721.78/x
  3. Step 3: Cross multiply
    521,592.10x = 719,968.17 × 306,721.78
  4. Step 4: Simplify right side
    521,592.10x = 220,829,918,645.74
  5. Step 5: Solve for x
    x = 220,829,918,645.74/521,592.10
  6. Step 6: Final answer
    x = 423,376.66

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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.