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Finding the Fourth Proportional to 819,390.40, 1,230,007.20 and 633,227.20

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Solution

The fourth proportional to 819,390.40, 1,230,007.20 and 633,227.20 is: 950,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,390.40 : 1,230,007.20 = 633,227.20 : x
  2. Step 2: Convert to fraction form
    819,390.40/1,230,007.20 = 633,227.20/x
  3. Step 3: Cross multiply
    819,390.40x = 1,230,007.20 × 633,227.20
  4. Step 4: Simplify right side
    819,390.40x = 778,874,015,235.84
  5. Step 5: Solve for x
    x = 778,874,015,235.84/819,390.40
  6. Step 6: Final answer
    x = 950,553.02

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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.