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Finding the Fourth Proportional to 651,960.60, 978,175.80 and 292,101.90

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Solution

The fourth proportional to 651,960.60, 978,175.80 and 292,101.90 is: 438,258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,960.60 : 978,175.80 = 292,101.90 : x
  2. Step 2: Convert to fraction form
    651,960.60/978,175.80 = 292,101.90/x
  3. Step 3: Cross multiply
    651,960.60x = 978,175.80 × 292,101.90
  4. Step 4: Simplify right side
    651,960.60x = 285,727,009,714.02
  5. Step 5: Solve for x
    x = 285,727,009,714.02/651,960.60
  6. Step 6: Final answer
    x = 438,258.09

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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.