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Finding the Fourth Proportional to 555,191.28, 767,455.20 and 495,354.96

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Solution

The fourth proportional to 555,191.28, 767,455.20 and 495,354.96 is: 684,741.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,191.28 : 767,455.20 = 495,354.96 : x
  2. Step 2: Convert to fraction form
    555,191.28/767,455.20 = 495,354.96/x
  3. Step 3: Cross multiply
    555,191.28x = 767,455.20 × 495,354.96
  4. Step 4: Simplify right side
    555,191.28x = 380,162,739,897.79
  5. Step 5: Solve for x
    x = 380,162,739,897.79/555,191.28
  6. Step 6: Final answer
    x = 684,741.91

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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.