Home / 1,681,105.12-2,319,830.55-956,129.20

Finding the Fourth Proportional to 1,681,105.12, 2,319,830.55 and 956,129.20

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Solution

The fourth proportional to 1,681,105.12, 2,319,830.55 and 956,129.20 is: 1,319,404.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,105.12 : 2,319,830.55 = 956,129.20 : x
  2. Step 2: Convert to fraction form
    1,681,105.12/2,319,830.55 = 956,129.20/x
  3. Step 3: Cross multiply
    1,681,105.12x = 2,319,830.55 × 956,129.20
  4. Step 4: Simplify right side
    1,681,105.12x = 2,218,057,722,107.48
  5. Step 5: Solve for x
    x = 2,218,057,722,107.48/1,681,105.12
  6. Step 6: Final answer
    x = 1,319,404.54

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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.