Home / 1,380,798.12-1,905,044.76-807,432.42

Finding the Fourth Proportional to 1,380,798.12, 1,905,044.76 and 807,432.42

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Solution

The fourth proportional to 1,380,798.12, 1,905,044.76 and 807,432.42 is: 1,113,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,798.12 : 1,905,044.76 = 807,432.42 : x
  2. Step 2: Convert to fraction form
    1,380,798.12/1,905,044.76 = 807,432.42/x
  3. Step 3: Cross multiply
    1,380,798.12x = 1,905,044.76 × 807,432.42
  4. Step 4: Simplify right side
    1,380,798.12x = 1,538,194,900,775.12
  5. Step 5: Solve for x
    x = 1,538,194,900,775.12/1,380,798.12
  6. Step 6: Final answer
    x = 1,113,989.71

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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.