Home / 1,215,251.70-1,822,877.55-742,470.90

Finding the Fourth Proportional to 1,215,251.70, 1,822,877.55 and 742,470.90

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Solution

The fourth proportional to 1,215,251.70, 1,822,877.55 and 742,470.90 is: 1,113,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,251.70 : 1,822,877.55 = 742,470.90 : x
  2. Step 2: Convert to fraction form
    1,215,251.70/1,822,877.55 = 742,470.90/x
  3. Step 3: Cross multiply
    1,215,251.70x = 1,822,877.55 × 742,470.90
  4. Step 4: Simplify right side
    1,215,251.70x = 1,353,433,535,138.30
  5. Step 5: Solve for x
    x = 1,353,433,535,138.30/1,215,251.70
  6. Step 6: Final answer
    x = 1,113,706.35

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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.