Home / 1,108,913.60-1,663,370.40-398,964.80

Finding the Fourth Proportional to 1,108,913.60, 1,663,370.40 and 398,964.80

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Solution

The fourth proportional to 1,108,913.60, 1,663,370.40 and 398,964.80 is: 598,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,913.60 : 1,663,370.40 = 398,964.80 : x
  2. Step 2: Convert to fraction form
    1,108,913.60/1,663,370.40 = 398,964.80/x
  3. Step 3: Cross multiply
    1,108,913.60x = 1,663,370.40 × 398,964.80
  4. Step 4: Simplify right side
    1,108,913.60x = 663,626,238,961.92
  5. Step 5: Solve for x
    x = 663,626,238,961.92/1,108,913.60
  6. Step 6: Final answer
    x = 598,447.20

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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.