Home / 977,107.40-1,465,661.10-809,145.80

Finding the Fourth Proportional to 977,107.40, 1,465,661.10 and 809,145.80

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Solution

The fourth proportional to 977,107.40, 1,465,661.10 and 809,145.80 is: 1,213,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,107.40 : 1,465,661.10 = 809,145.80 : x
  2. Step 2: Convert to fraction form
    977,107.40/1,465,661.10 = 809,145.80/x
  3. Step 3: Cross multiply
    977,107.40x = 1,465,661.10 × 809,145.80
  4. Step 4: Simplify right side
    977,107.40x = 1,185,933,523,288.38
  5. Step 5: Solve for x
    x = 1,185,933,523,288.38/977,107.40
  6. Step 6: Final answer
    x = 1,213,718.70

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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.