Home / 679,930,387.20-1,019,895,580.80-219,915,057.60

Finding the Fourth Proportional to 679,930,387.20, 1,019,895,580.80 and 219,915,057.60

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Solution

The fourth proportional to 679,930,387.20, 1,019,895,580.80 and 219,915,057.60 is: 329,872,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,930,387.20 : 1,019,895,580.80 = 219,915,057.60 : x
  2. Step 2: Convert to fraction form
    679,930,387.20/1,019,895,580.80 = 219,915,057.60/x
  3. Step 3: Cross multiply
    679,930,387.20x = 1,019,895,580.80 × 219,915,057.60
  4. Step 4: Simplify right side
    679,930,387.20x = 224,290,395,397,617,440
  5. Step 5: Solve for x
    x = 224,290,395,397,617,440/679,930,387.20
  6. Step 6: Final answer
    x = 329,872,586.40

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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.