Home / 1,243,126.28-1,865,685.87-644,258.65

Finding the Fourth Proportional to 1,243,126.28, 1,865,685.87 and 644,258.65

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Solution

The fourth proportional to 1,243,126.28, 1,865,685.87 and 644,258.65 is: 966,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,126.28 : 1,865,685.87 = 644,258.65 : x
  2. Step 2: Convert to fraction form
    1,243,126.28/1,865,685.87 = 644,258.65/x
  3. Step 3: Cross multiply
    1,243,126.28x = 1,865,685.87 × 644,258.65
  4. Step 4: Simplify right side
    1,243,126.28x = 1,201,984,247,380.55
  5. Step 5: Solve for x
    x = 1,201,984,247,380.55/1,243,126.28
  6. Step 6: Final answer
    x = 966,904.39

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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.