Home / 1,386,242.40-2,079,428.40-439,687.20

Finding the Fourth Proportional to 1,386,242.40, 2,079,428.40 and 439,687.20

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Solution

The fourth proportional to 1,386,242.40, 2,079,428.40 and 439,687.20 is: 659,551.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,242.40 : 2,079,428.40 = 439,687.20 : x
  2. Step 2: Convert to fraction form
    1,386,242.40/2,079,428.40 = 439,687.20/x
  3. Step 3: Cross multiply
    1,386,242.40x = 2,079,428.40 × 439,687.20
  4. Step 4: Simplify right side
    1,386,242.40x = 914,298,050,796.48
  5. Step 5: Solve for x
    x = 914,298,050,796.48/1,386,242.40
  6. Step 6: Final answer
    x = 659,551.35

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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.