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Finding the Fourth Proportional to 868,937.60, 1,303,406.40 and 443,784.80

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Solution

The fourth proportional to 868,937.60, 1,303,406.40 and 443,784.80 is: 665,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,937.60 : 1,303,406.40 = 443,784.80 : x
  2. Step 2: Convert to fraction form
    868,937.60/1,303,406.40 = 443,784.80/x
  3. Step 3: Cross multiply
    868,937.60x = 1,303,406.40 × 443,784.80
  4. Step 4: Simplify right side
    868,937.60x = 578,431,948,542.72
  5. Step 5: Solve for x
    x = 578,431,948,542.72/868,937.60
  6. Step 6: Final answer
    x = 665,677.20

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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.