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Finding the Fourth Proportional to 528,990.30, 792,319.05 and 459,006.30

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Solution

The fourth proportional to 528,990.30, 792,319.05 and 459,006.30 is: 687,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,990.30 : 792,319.05 = 459,006.30 : x
  2. Step 2: Convert to fraction form
    528,990.30/792,319.05 = 459,006.30/x
  3. Step 3: Cross multiply
    528,990.30x = 792,319.05 × 459,006.30
  4. Step 4: Simplify right side
    528,990.30x = 363,679,435,560.02
  5. Step 5: Solve for x
    x = 363,679,435,560.02/528,990.30
  6. Step 6: Final answer
    x = 687,497.36

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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.