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Finding the Fourth Proportional to 819,232.40, 1,230,691.80 and 570,400.40

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Solution

The fourth proportional to 819,232.40, 1,230,691.80 and 570,400.40 is: 856,883.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,232.40 : 1,230,691.80 = 570,400.40 : x
  2. Step 2: Convert to fraction form
    819,232.40/1,230,691.80 = 570,400.40/x
  3. Step 3: Cross multiply
    819,232.40x = 1,230,691.80 × 570,400.40
  4. Step 4: Simplify right side
    819,232.40x = 701,987,094,996.72
  5. Step 5: Solve for x
    x = 701,987,094,996.72/819,232.40
  6. Step 6: Final answer
    x = 856,883.95

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1.5x scale

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.