Home / 709,622.28-979,293.78-403,688.52

Finding the Fourth Proportional to 709,622.28, 979,293.78 and 403,688.52

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Solution

The fourth proportional to 709,622.28, 979,293.78 and 403,688.52 is: 557,098.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,622.28 : 979,293.78 = 403,688.52 : x
  2. Step 2: Convert to fraction form
    709,622.28/979,293.78 = 403,688.52/x
  3. Step 3: Cross multiply
    709,622.28x = 979,293.78 × 403,688.52
  4. Step 4: Simplify right side
    709,622.28x = 395,329,656,693.41
  5. Step 5: Solve for x
    x = 395,329,656,693.41/709,622.28
  6. Step 6: Final answer
    x = 557,098.71

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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.