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Finding the Fourth Proportional to 708,154.31, 976,960.31 and 493,418.86

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Solution

The fourth proportional to 708,154.31, 976,960.31 and 493,418.86 is: 680,714.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,154.31 : 976,960.31 = 493,418.86 : x
  2. Step 2: Convert to fraction form
    708,154.31/976,960.31 = 493,418.86/x
  3. Step 3: Cross multiply
    708,154.31x = 976,960.31 × 493,418.86
  4. Step 4: Simplify right side
    708,154.31x = 482,050,637,515.95
  5. Step 5: Solve for x
    x = 482,050,637,515.95/708,154.31
  6. Step 6: Final answer
    x = 680,714.12

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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.