Home / 399,315,207.72-598,985,013.90-136,996,079.04

Finding the Fourth Proportional to 399,315,207.72, 598,985,013.90 and 136,996,079.04

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Solution

The fourth proportional to 399,315,207.72, 598,985,013.90 and 136,996,079.04 is: 205,498,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,315,207.72 : 598,985,013.90 = 136,996,079.04 : x
  2. Step 2: Convert to fraction form
    399,315,207.72/598,985,013.90 = 136,996,079.04/x
  3. Step 3: Cross multiply
    399,315,207.72x = 598,985,013.90 × 136,996,079.04
  4. Step 4: Simplify right side
    399,315,207.72x = 82,058,598,308,019,888
  5. Step 5: Solve for x
    x = 82,058,598,308,019,888/399,315,207.72
  6. Step 6: Final answer
    x = 205,498,304.90

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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.