Home / 1,386,505.60-2,079,758.40-389,233.60

Finding the Fourth Proportional to 1,386,505.60, 2,079,758.40 and 389,233.60

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Solution

The fourth proportional to 1,386,505.60, 2,079,758.40 and 389,233.60 is: 583,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,505.60 : 2,079,758.40 = 389,233.60 : x
  2. Step 2: Convert to fraction form
    1,386,505.60/2,079,758.40 = 389,233.60/x
  3. Step 3: Cross multiply
    1,386,505.60x = 2,079,758.40 × 389,233.60
  4. Step 4: Simplify right side
    1,386,505.60x = 809,511,849,162.24
  5. Step 5: Solve for x
    x = 809,511,849,162.24/1,386,505.60
  6. Step 6: Final answer
    x = 583,850.40

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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.