Home / 1,388,562.40-2,082,843.60-391,290.40

Finding the Fourth Proportional to 1,388,562.40, 2,082,843.60 and 391,290.40

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Solution

The fourth proportional to 1,388,562.40, 2,082,843.60 and 391,290.40 is: 586,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,562.40 : 2,082,843.60 = 391,290.40 : x
  2. Step 2: Convert to fraction form
    1,388,562.40/2,082,843.60 = 391,290.40/x
  3. Step 3: Cross multiply
    1,388,562.40x = 2,082,843.60 × 391,290.40
  4. Step 4: Simplify right side
    1,388,562.40x = 814,996,705,381.44
  5. Step 5: Solve for x
    x = 814,996,705,381.44/1,388,562.40
  6. Step 6: Final answer
    x = 586,935.60

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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.