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Finding the Fourth Proportional to 555,447.72, 766,520.28 and 313,733.16

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Solution

The fourth proportional to 555,447.72, 766,520.28 and 313,733.16 is: 432,953.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,447.72 : 766,520.28 = 313,733.16 : x
  2. Step 2: Convert to fraction form
    555,447.72/766,520.28 = 313,733.16/x
  3. Step 3: Cross multiply
    555,447.72x = 766,520.28 × 313,733.16
  4. Step 4: Simplify right side
    555,447.72x = 240,482,829,648.49
  5. Step 5: Solve for x
    x = 240,482,829,648.49/555,447.72
  6. Step 6: Final answer
    x = 432,953.13

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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.