Home / 1,005,470.10-1,387,086.39-890,865.63

Finding the Fourth Proportional to 1,005,470.10, 1,387,086.39 and 890,865.63

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Solution

The fourth proportional to 1,005,470.10, 1,387,086.39 and 890,865.63 is: 1,228,984.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,470.10 : 1,387,086.39 = 890,865.63 : x
  2. Step 2: Convert to fraction form
    1,005,470.10/1,387,086.39 = 890,865.63/x
  3. Step 3: Cross multiply
    1,005,470.10x = 1,387,086.39 × 890,865.63
  4. Step 4: Simplify right side
    1,005,470.10x = 1,235,707,590,691.78
  5. Step 5: Solve for x
    x = 1,235,707,590,691.78/1,005,470.10
  6. Step 6: Final answer
    x = 1,228,984.92

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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.