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Finding the Fourth Proportional to 575,463.80, 863,195.70 and 486,890.30

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Solution

The fourth proportional to 575,463.80, 863,195.70 and 486,890.30 is: 730,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,463.80 : 863,195.70 = 486,890.30 : x
  2. Step 2: Convert to fraction form
    575,463.80/863,195.70 = 486,890.30/x
  3. Step 3: Cross multiply
    575,463.80x = 863,195.70 × 486,890.30
  4. Step 4: Simplify right side
    575,463.80x = 420,281,613,331.71
  5. Step 5: Solve for x
    x = 420,281,613,331.71/575,463.80
  6. Step 6: Final answer
    x = 730,335.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.