Home / 420,126,426.52-579,775,271.07-231,955,084.60

Finding the Fourth Proportional to 420,126,426.52, 579,775,271.07 and 231,955,084.60

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Solution

The fourth proportional to 420,126,426.52, 579,775,271.07 and 231,955,084.60 is: 320,098,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,126,426.52 : 579,775,271.07 = 231,955,084.60 : x
  2. Step 2: Convert to fraction form
    420,126,426.52/579,775,271.07 = 231,955,084.60/x
  3. Step 3: Cross multiply
    420,126,426.52x = 579,775,271.07 × 231,955,084.60
  4. Step 4: Simplify right side
    420,126,426.52x = 134,481,822,050,029,792
  5. Step 5: Solve for x
    x = 134,481,822,050,029,792/420,126,426.52
  6. Step 6: Final answer
    x = 320,098,459.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.