Home / 1,247,280.20-1,872,013.80-741,208.40

Finding the Fourth Proportional to 1,247,280.20, 1,872,013.80 and 741,208.40

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Solution

The fourth proportional to 1,247,280.20, 1,872,013.80 and 741,208.40 is: 1,112,462.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,280.20 : 1,872,013.80 = 741,208.40 : x
  2. Step 2: Convert to fraction form
    1,247,280.20/1,872,013.80 = 741,208.40/x
  3. Step 3: Cross multiply
    1,247,280.20x = 1,872,013.80 × 741,208.40
  4. Step 4: Simplify right side
    1,247,280.20x = 1,387,552,353,475.92
  5. Step 5: Solve for x
    x = 1,387,552,353,475.92/1,247,280.20
  6. Step 6: Final answer
    x = 1,112,462.42

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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.