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Finding the Fourth Proportional to 485,329.60, 727,994.40 and 401,348.80

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Solution

The fourth proportional to 485,329.60, 727,994.40 and 401,348.80 is: 602,023.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,329.60 : 727,994.40 = 401,348.80 : x
  2. Step 2: Convert to fraction form
    485,329.60/727,994.40 = 401,348.80/x
  3. Step 3: Cross multiply
    485,329.60x = 727,994.40 × 401,348.80
  4. Step 4: Simplify right side
    485,329.60x = 292,179,678,846.72
  5. Step 5: Solve for x
    x = 292,179,678,846.72/485,329.60
  6. Step 6: Final answer
    x = 602,023.20

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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.