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Finding the Fourth Proportional to 463,590.80, 695,386.20 and 285,520.40

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Solution

The fourth proportional to 463,590.80, 695,386.20 and 285,520.40 is: 428,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,590.80 : 695,386.20 = 285,520.40 : x
  2. Step 2: Convert to fraction form
    463,590.80/695,386.20 = 285,520.40/x
  3. Step 3: Cross multiply
    463,590.80x = 695,386.20 × 285,520.40
  4. Step 4: Simplify right side
    463,590.80x = 198,546,945,978.48
  5. Step 5: Solve for x
    x = 198,546,945,978.48/463,590.80
  6. Step 6: Final answer
    x = 428,280.60

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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.