Home / 515,609,357.28-773,406,457.80-127,432,221.12

Finding the Fourth Proportional to 515,609,357.28, 773,406,457.80 and 127,432,221.12

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Solution

The fourth proportional to 515,609,357.28, 773,406,457.80 and 127,432,221.12 is: 191,146,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,609,357.28 : 773,406,457.80 = 127,432,221.12 : x
  2. Step 2: Convert to fraction form
    515,609,357.28/773,406,457.80 = 127,432,221.12/x
  3. Step 3: Cross multiply
    515,609,357.28x = 773,406,457.80 × 127,432,221.12
  4. Step 4: Simplify right side
    515,609,357.28x = 98,556,902,746,005,552
  5. Step 5: Solve for x
    x = 98,556,902,746,005,552/515,609,357.28
  6. Step 6: Final answer
    x = 191,146,458.76

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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.