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Finding the Fourth Proportional to 2,746,379.80, 4,119,569.70 and 853,106.20

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Solution

The fourth proportional to 2,746,379.80, 4,119,569.70 and 853,106.20 is: 1,279,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746,379.80 : 4,119,569.70 = 853,106.20 : x
  2. Step 2: Convert to fraction form
    2,746,379.80/4,119,569.70 = 853,106.20/x
  3. Step 3: Cross multiply
    2,746,379.80x = 4,119,569.70 × 853,106.20
  4. Step 4: Simplify right side
    2,746,379.80x = 3,514,430,452,402.14
  5. Step 5: Solve for x
    x = 3,514,430,452,402.14/2,746,379.80
  6. Step 6: Final answer
    x = 1,279,659.30

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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.