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Finding the Fourth Proportional to 707,418, 976,885.27 and 449,378.12

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Solution

The fourth proportional to 707,418, 976,885.27 and 449,378.12 is: 620,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,418 : 976,885.27 = 449,378.12 : x
  2. Step 2: Convert to fraction form
    707,418/976,885.27 = 449,378.12/x
  3. Step 3: Cross multiply
    707,418x = 976,885.27 × 449,378.12
  4. Step 4: Simplify right side
    707,418x = 438,990,866,088.29
  5. Step 5: Solve for x
    x = 438,990,866,088.29/707,418
  6. Step 6: Final answer
    x = 620,553.71

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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.