Home / 642,744,120.80-886,996,605.15-360,549,115.58

Finding the Fourth Proportional to 642,744,120.80, 886,996,605.15 and 360,549,115.58

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Solution

The fourth proportional to 642,744,120.80, 886,996,605.15 and 360,549,115.58 is: 497,563,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,744,120.80 : 886,996,605.15 = 360,549,115.58 : x
  2. Step 2: Convert to fraction form
    642,744,120.80/886,996,605.15 = 360,549,115.58/x
  3. Step 3: Cross multiply
    642,744,120.80x = 886,996,605.15 × 360,549,115.58
  4. Step 4: Simplify right side
    642,744,120.80x = 319,805,841,504,859,968
  5. Step 5: Solve for x
    x = 319,805,841,504,859,968/642,744,120.80
  6. Step 6: Final answer
    x = 497,563,231.09

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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.