Home / 1,247,926.80-1,872,359.10-742,778.40

Finding the Fourth Proportional to 1,247,926.80, 1,872,359.10 and 742,778.40

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Solution

The fourth proportional to 1,247,926.80, 1,872,359.10 and 742,778.40 is: 1,114,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,926.80 : 1,872,359.10 = 742,778.40 : x
  2. Step 2: Convert to fraction form
    1,247,926.80/1,872,359.10 = 742,778.40/x
  3. Step 3: Cross multiply
    1,247,926.80x = 1,872,359.10 × 742,778.40
  4. Step 4: Simplify right side
    1,247,926.80x = 1,390,747,896,523.44
  5. Step 5: Solve for x
    x = 1,390,747,896,523.44/1,247,926.80
  6. Step 6: Final answer
    x = 1,114,446.69

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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.