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Finding the Fourth Proportional to 652,039.60, 978,059.40 and 518,195.20

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Solution

The fourth proportional to 652,039.60, 978,059.40 and 518,195.20 is: 777,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,039.60 : 978,059.40 = 518,195.20 : x
  2. Step 2: Convert to fraction form
    652,039.60/978,059.40 = 518,195.20/x
  3. Step 3: Cross multiply
    652,039.60x = 978,059.40 × 518,195.20
  4. Step 4: Simplify right side
    652,039.60x = 506,825,686,394.88
  5. Step 5: Solve for x
    x = 506,825,686,394.88/652,039.60
  6. Step 6: Final answer
    x = 777,292.80

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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.