Home / 1,291,870.32-1,780,933.23-908,707.92

Finding the Fourth Proportional to 1,291,870.32, 1,780,933.23 and 908,707.92

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Solution

The fourth proportional to 1,291,870.32, 1,780,933.23 and 908,707.92 is: 1,252,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,870.32 : 1,780,933.23 = 908,707.92 : x
  2. Step 2: Convert to fraction form
    1,291,870.32/1,780,933.23 = 908,707.92/x
  3. Step 3: Cross multiply
    1,291,870.32x = 1,780,933.23 × 908,707.92
  4. Step 4: Simplify right side
    1,291,870.32x = 1,618,348,131,092.18
  5. Step 5: Solve for x
    x = 1,618,348,131,092.18/1,291,870.32
  6. Step 6: Final answer
    x = 1,252,717.17

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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.