Home / 578,775,126.40-868,162,689.60-147,930,812.80

Finding the Fourth Proportional to 578,775,126.40, 868,162,689.60 and 147,930,812.80

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Solution

The fourth proportional to 578,775,126.40, 868,162,689.60 and 147,930,812.80 is: 221,896,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,775,126.40 : 868,162,689.60 = 147,930,812.80 : x
  2. Step 2: Convert to fraction form
    578,775,126.40/868,162,689.60 = 147,930,812.80/x
  3. Step 3: Cross multiply
    578,775,126.40x = 868,162,689.60 × 147,930,812.80
  4. Step 4: Simplify right side
    578,775,126.40x = 128,428,012,315,162,128
  5. Step 5: Solve for x
    x = 128,428,012,315,162,128/578,775,126.40
  6. Step 6: Final answer
    x = 221,896,219.20

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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.