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Finding the Fourth Proportional to 659,645.31, 910,312.26 and 357,839.31

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Solution

The fourth proportional to 659,645.31, 910,312.26 and 357,839.31 is: 493,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,645.31 : 910,312.26 = 357,839.31 : x
  2. Step 2: Convert to fraction form
    659,645.31/910,312.26 = 357,839.31/x
  3. Step 3: Cross multiply
    659,645.31x = 910,312.26 × 357,839.31
  4. Step 4: Simplify right side
    659,645.31x = 325,745,511,002.94
  5. Step 5: Solve for x
    x = 325,745,511,002.94/659,645.31
  6. Step 6: Final answer
    x = 493,819.19

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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.