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Finding the Fourth Proportional to 651,962.60, 978,178.80 and 292,103.90

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Solution

The fourth proportional to 651,962.60, 978,178.80 and 292,103.90 is: 438,261.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,962.60 : 978,178.80 = 292,103.90 : x
  2. Step 2: Convert to fraction form
    651,962.60/978,178.80 = 292,103.90/x
  3. Step 3: Cross multiply
    651,962.60x = 978,178.80 × 292,103.90
  4. Step 4: Simplify right side
    651,962.60x = 285,729,842,377.32
  5. Step 5: Solve for x
    x = 285,729,842,377.32/651,962.60
  6. Step 6: Final answer
    x = 438,261.09

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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.