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Finding the Fourth Proportional to 709,875.14, 979,713.60 and 404,025.90

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Solution

The fourth proportional to 709,875.14, 979,713.60 and 404,025.90 is: 557,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,875.14 : 979,713.60 = 404,025.90 : x
  2. Step 2: Convert to fraction form
    709,875.14/979,713.60 = 404,025.90/x
  3. Step 3: Cross multiply
    709,875.14x = 979,713.60 × 404,025.90
  4. Step 4: Simplify right side
    709,875.14x = 395,829,668,982.24
  5. Step 5: Solve for x
    x = 395,829,668,982.24/709,875.14
  6. Step 6: Final answer
    x = 557,604.64

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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.