Home / 911,023.20-1,366,502.40-412,387.20

Finding the Fourth Proportional to 911,023.20, 1,366,502.40 and 412,387.20

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Solution

The fourth proportional to 911,023.20, 1,366,502.40 and 412,387.20 is: 618,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,023.20 : 1,366,502.40 = 412,387.20 : x
  2. Step 2: Convert to fraction form
    911,023.20/1,366,502.40 = 412,387.20/x
  3. Step 3: Cross multiply
    911,023.20x = 1,366,502.40 × 412,387.20
  4. Step 4: Simplify right side
    911,023.20x = 563,528,098,529.28
  5. Step 5: Solve for x
    x = 563,528,098,529.28/911,023.20
  6. Step 6: Final answer
    x = 618,566.13

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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.