Home / 1,291,884.32-1,780,952.64-908,721.92

Finding the Fourth Proportional to 1,291,884.32, 1,780,952.64 and 908,721.92

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Solution

The fourth proportional to 1,291,884.32, 1,780,952.64 and 908,721.92 is: 1,252,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,884.32 : 1,780,952.64 = 908,721.92 : x
  2. Step 2: Convert to fraction form
    1,291,884.32/1,780,952.64 = 908,721.92/x
  3. Step 3: Cross multiply
    1,291,884.32x = 1,780,952.64 × 908,721.92
  4. Step 4: Simplify right side
    1,291,884.32x = 1,618,390,702,449.87
  5. Step 5: Solve for x
    x = 1,618,390,702,449.87/1,291,884.32
  6. Step 6: Final answer
    x = 1,252,736.55

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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.