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Finding the Fourth Proportional to 486,089.40, 729,134.10 and 486,089.40

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Solution

The fourth proportional to 486,089.40, 729,134.10 and 486,089.40 is: 729,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,089.40 : 729,134.10 = 486,089.40 : x
  2. Step 2: Convert to fraction form
    486,089.40/729,134.10 = 486,089.40/x
  3. Step 3: Cross multiply
    486,089.40x = 729,134.10 × 486,089.40
  4. Step 4: Simplify right side
    486,089.40x = 354,424,357,188.54
  5. Step 5: Solve for x
    x = 354,424,357,188.54/486,089.40
  6. Step 6: Final answer
    x = 729,134.10

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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.