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Finding the Fourth Proportional to 528,594.79, 792,885.10 and 129,239.01

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Solution

The fourth proportional to 528,594.79, 792,885.10 and 129,239.01 is: 193,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,594.79 : 792,885.10 = 129,239.01 : x
  2. Step 2: Convert to fraction form
    528,594.79/792,885.10 = 129,239.01/x
  3. Step 3: Cross multiply
    528,594.79x = 792,885.10 × 129,239.01
  4. Step 4: Simplify right side
    528,594.79x = 102,471,685,367.75
  5. Step 5: Solve for x
    x = 102,471,685,367.75/528,594.79
  6. Step 6: Final answer
    x = 193,856.78

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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.