Home / 1,005,309.60-1,386,864.90-890,705.13

Finding the Fourth Proportional to 1,005,309.60, 1,386,864.90 and 890,705.13

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Solution

The fourth proportional to 1,005,309.60, 1,386,864.90 and 890,705.13 is: 1,228,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,309.60 : 1,386,864.90 = 890,705.13 : x
  2. Step 2: Convert to fraction form
    1,005,309.60/1,386,864.90 = 890,705.13/x
  3. Step 3: Cross multiply
    1,005,309.60x = 1,386,864.90 × 890,705.13
  4. Step 4: Simplify right side
    1,005,309.60x = 1,235,287,681,046.94
  5. Step 5: Solve for x
    x = 1,235,287,681,046.94/1,005,309.60
  6. Step 6: Final answer
    x = 1,228,763.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.