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Finding the Fourth Proportional to 652,044.60, 978,066.90 and 518,200.20

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Solution

The fourth proportional to 652,044.60, 978,066.90 and 518,200.20 is: 777,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,044.60 : 978,066.90 = 518,200.20 : x
  2. Step 2: Convert to fraction form
    652,044.60/978,066.90 = 518,200.20/x
  3. Step 3: Cross multiply
    652,044.60x = 978,066.90 × 518,200.20
  4. Step 4: Simplify right side
    652,044.60x = 506,834,463,193.38
  5. Step 5: Solve for x
    x = 506,834,463,193.38/652,044.60
  6. Step 6: Final answer
    x = 777,300.30

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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.