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Finding the Fourth Proportional to 713,009.60, 1,070,119.20 and 292,587.20

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Solution

The fourth proportional to 713,009.60, 1,070,119.20 and 292,587.20 is: 439,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,009.60 : 1,070,119.20 = 292,587.20 : x
  2. Step 2: Convert to fraction form
    713,009.60/1,070,119.20 = 292,587.20/x
  3. Step 3: Cross multiply
    713,009.60x = 1,070,119.20 × 292,587.20
  4. Step 4: Simplify right side
    713,009.60x = 313,103,180,394.24
  5. Step 5: Solve for x
    x = 313,103,180,394.24/713,009.60
  6. Step 6: Final answer
    x = 439,128.98

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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.