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Finding the Fourth Proportional to 539,134.60, 808,701.90 and 486,646.60

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Solution

The fourth proportional to 539,134.60, 808,701.90 and 486,646.60 is: 729,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,134.60 : 808,701.90 = 486,646.60 : x
  2. Step 2: Convert to fraction form
    539,134.60/808,701.90 = 486,646.60/x
  3. Step 3: Cross multiply
    539,134.60x = 808,701.90 × 486,646.60
  4. Step 4: Simplify right side
    539,134.60x = 393,552,030,048.54
  5. Step 5: Solve for x
    x = 393,552,030,048.54/539,134.60
  6. Step 6: Final answer
    x = 729,969.90

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Double scale
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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.