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Finding the Fourth Proportional to 486,089.60, 729,134.40 and 486,089.60

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Solution

The fourth proportional to 486,089.60, 729,134.40 and 486,089.60 is: 729,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,089.60 : 729,134.40 = 486,089.60 : x
  2. Step 2: Convert to fraction form
    486,089.60/729,134.40 = 486,089.60/x
  3. Step 3: Cross multiply
    486,089.60x = 729,134.40 × 486,089.60
  4. Step 4: Simplify right side
    486,089.60x = 354,424,648,842.24
  5. Step 5: Solve for x
    x = 354,424,648,842.24/486,089.60
  6. Step 6: Final answer
    x = 729,134.40

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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.