Home / 1,218,139.70-1,827,007.95-408,514.10

Finding the Fourth Proportional to 1,218,139.70, 1,827,007.95 and 408,514.10

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Solution

The fourth proportional to 1,218,139.70, 1,827,007.95 and 408,514.10 is: 612,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,139.70 : 1,827,007.95 = 408,514.10 : x
  2. Step 2: Convert to fraction form
    1,218,139.70/1,827,007.95 = 408,514.10/x
  3. Step 3: Cross multiply
    1,218,139.70x = 1,827,007.95 × 408,514.10
  4. Step 4: Simplify right side
    1,218,139.70x = 746,358,508,387.10
  5. Step 5: Solve for x
    x = 746,358,508,387.10/1,218,139.70
  6. Step 6: Final answer
    x = 612,703.54

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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.