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Finding the Fourth Proportional to 459,089.70, 687,079.35 and 459,089.70

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Solution

The fourth proportional to 459,089.70, 687,079.35 and 459,089.70 is: 687,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,089.70 : 687,079.35 = 459,089.70 : x
  2. Step 2: Convert to fraction form
    459,089.70/687,079.35 = 459,089.70/x
  3. Step 3: Cross multiply
    459,089.70x = 687,079.35 × 459,089.70
  4. Step 4: Simplify right side
    459,089.70x = 315,431,052,667.70
  5. Step 5: Solve for x
    x = 315,431,052,667.70/459,089.70
  6. Step 6: Final answer
    x = 687,079.35

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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.