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Finding the Fourth Proportional to 977,647.10, 1,466,470.65 and 859,451.90

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Solution

The fourth proportional to 977,647.10, 1,466,470.65 and 859,451.90 is: 1,289,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,647.10 : 1,466,470.65 = 859,451.90 : x
  2. Step 2: Convert to fraction form
    977,647.10/1,466,470.65 = 859,451.90/x
  3. Step 3: Cross multiply
    977,647.10x = 1,466,470.65 × 859,451.90
  4. Step 4: Simplify right side
    977,647.10x = 1,260,360,986,436.73
  5. Step 5: Solve for x
    x = 1,260,360,986,436.73/977,647.10
  6. Step 6: Final answer
    x = 1,289,177.85

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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.