Home / 575,187,009.40-862,780,514.10-391,520,999.80

Finding the Fourth Proportional to 575,187,009.40, 862,780,514.10 and 391,520,999.80

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Solution

The fourth proportional to 575,187,009.40, 862,780,514.10 and 391,520,999.80 is: 587,281,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,187,009.40 : 862,780,514.10 = 391,520,999.80 : x
  2. Step 2: Convert to fraction form
    575,187,009.40/862,780,514.10 = 391,520,999.80/x
  3. Step 3: Cross multiply
    575,187,009.40x = 862,780,514.10 × 391,520,999.80
  4. Step 4: Simplify right side
    575,187,009.40x = 337,796,689,488,390,016
  5. Step 5: Solve for x
    x = 337,796,689,488,390,016/575,187,009.40
  6. Step 6: Final answer
    x = 587,281,499.70

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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.