Home / 1,490,472.40-2,057,120.94-878,589.76

Finding the Fourth Proportional to 1,490,472.40, 2,057,120.94 and 878,589.76

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Solution

The fourth proportional to 1,490,472.40, 2,057,120.94 and 878,589.76 is: 1,212,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,472.40 : 2,057,120.94 = 878,589.76 : x
  2. Step 2: Convert to fraction form
    1,490,472.40/2,057,120.94 = 878,589.76/x
  3. Step 3: Cross multiply
    1,490,472.40x = 2,057,120.94 × 878,589.76
  4. Step 4: Simplify right side
    1,490,472.40x = 1,807,365,392,965.57
  5. Step 5: Solve for x
    x = 1,807,365,392,965.57/1,490,472.40
  6. Step 6: Final answer
    x = 1,212,612.45

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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.