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Finding the Fourth Proportional to 528,321.67, 792,479.76 and 128,964.53

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Solution

The fourth proportional to 528,321.67, 792,479.76 and 128,964.53 is: 193,446.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,321.67 : 792,479.76 = 128,964.53 : x
  2. Step 2: Convert to fraction form
    528,321.67/792,479.76 = 128,964.53/x
  3. Step 3: Cross multiply
    528,321.67x = 792,479.76 × 128,964.53
  4. Step 4: Simplify right side
    528,321.67x = 102,201,779,782.91
  5. Step 5: Solve for x
    x = 102,201,779,782.91/528,321.67
  6. Step 6: Final answer
    x = 193,446.12

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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.