Home / 528,476.62-792,708.01-129,120.85

Finding the Fourth Proportional to 528,476.62, 792,708.01 and 129,120.85

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Solution

The fourth proportional to 528,476.62, 792,708.01 and 129,120.85 is: 193,679.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,476.62 : 792,708.01 = 129,120.85 : x
  2. Step 2: Convert to fraction form
    528,476.62/792,708.01 = 129,120.85/x
  3. Step 3: Cross multiply
    528,476.62x = 792,708.01 × 129,120.85
  4. Step 4: Simplify right side
    528,476.62x = 102,355,132,053.01
  5. Step 5: Solve for x
    x = 102,355,132,053.01/528,476.62
  6. Step 6: Final answer
    x = 193,679.58

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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.