Home / 977,139.20-1,465,708.80-809,177.60

Finding the Fourth Proportional to 977,139.20, 1,465,708.80 and 809,177.60

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Solution

The fourth proportional to 977,139.20, 1,465,708.80 and 809,177.60 is: 1,213,766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,139.20 : 1,465,708.80 = 809,177.60 : x
  2. Step 2: Convert to fraction form
    977,139.20/1,465,708.80 = 809,177.60/x
  3. Step 3: Cross multiply
    977,139.20x = 1,465,708.80 × 809,177.60
  4. Step 4: Simplify right side
    977,139.20x = 1,186,018,729,082.88
  5. Step 5: Solve for x
    x = 1,186,018,729,082.88/977,139.20
  6. Step 6: Final answer
    x = 1,213,766.40

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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.