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Finding the Fourth Proportional to 555,191.91, 767,456.06 and 495,355.59

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Solution

The fourth proportional to 555,191.91, 767,456.06 and 495,355.59 is: 684,742.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,191.91 : 767,456.06 = 495,355.59 : x
  2. Step 2: Convert to fraction form
    555,191.91/767,456.06 = 495,355.59/x
  3. Step 3: Cross multiply
    555,191.91x = 767,456.06 × 495,355.59
  4. Step 4: Simplify right side
    555,191.91x = 380,163,646,801.48
  5. Step 5: Solve for x
    x = 380,163,646,801.48/555,191.91
  6. Step 6: Final answer
    x = 684,742.78

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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.