Home / 1,547,128.50-2,135,074.11-868,115.22

Finding the Fourth Proportional to 1,547,128.50, 2,135,074.11 and 868,115.22

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Solution

The fourth proportional to 1,547,128.50, 2,135,074.11 and 868,115.22 is: 1,198,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547,128.50 : 2,135,074.11 = 868,115.22 : x
  2. Step 2: Convert to fraction form
    1,547,128.50/2,135,074.11 = 868,115.22/x
  3. Step 3: Cross multiply
    1,547,128.50x = 2,135,074.11 × 868,115.22
  4. Step 4: Simplify right side
    1,547,128.50x = 1,853,490,330,718.95
  5. Step 5: Solve for x
    x = 1,853,490,330,718.95/1,547,128.50
  6. Step 6: Final answer
    x = 1,198,019.64

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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.