Home / 1,178,902.20-1,626,885.06-642,358.20

Finding the Fourth Proportional to 1,178,902.20, 1,626,885.06 and 642,358.20

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Solution

The fourth proportional to 1,178,902.20, 1,626,885.06 and 642,358.20 is: 886,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,902.20 : 1,626,885.06 = 642,358.20 : x
  2. Step 2: Convert to fraction form
    1,178,902.20/1,626,885.06 = 642,358.20/x
  3. Step 3: Cross multiply
    1,178,902.20x = 1,626,885.06 × 642,358.20
  4. Step 4: Simplify right side
    1,178,902.20x = 1,045,042,958,748.49
  5. Step 5: Solve for x
    x = 1,045,042,958,748.49/1,178,902.20
  6. Step 6: Final answer
    x = 886,454.33

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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.