Home / 1,145,139.40-1,717,709.10-809,216.20

Finding the Fourth Proportional to 1,145,139.40, 1,717,709.10 and 809,216.20

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Solution

The fourth proportional to 1,145,139.40, 1,717,709.10 and 809,216.20 is: 1,213,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,139.40 : 1,717,709.10 = 809,216.20 : x
  2. Step 2: Convert to fraction form
    1,145,139.40/1,717,709.10 = 809,216.20/x
  3. Step 3: Cross multiply
    1,145,139.40x = 1,717,709.10 × 809,216.20
  4. Step 4: Simplify right side
    1,145,139.40x = 1,389,998,030,607.42
  5. Step 5: Solve for x
    x = 1,389,998,030,607.42/1,145,139.40
  6. Step 6: Final answer
    x = 1,213,824.30

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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.