Home / 1,386,902.80-2,080,354.20-721,968.40

Finding the Fourth Proportional to 1,386,902.80, 2,080,354.20 and 721,968.40

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Solution

The fourth proportional to 1,386,902.80, 2,080,354.20 and 721,968.40 is: 1,082,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,902.80 : 2,080,354.20 = 721,968.40 : x
  2. Step 2: Convert to fraction form
    1,386,902.80/2,080,354.20 = 721,968.40/x
  3. Step 3: Cross multiply
    1,386,902.80x = 2,080,354.20 × 721,968.40
  4. Step 4: Simplify right side
    1,386,902.80x = 1,501,949,993,207.28
  5. Step 5: Solve for x
    x = 1,501,949,993,207.28/1,386,902.80
  6. Step 6: Final answer
    x = 1,082,952.60

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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.