Home / 1,689,439.05-2,331,407.31-915,050.61

Finding the Fourth Proportional to 1,689,439.05, 2,331,407.31 and 915,050.61

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Solution

The fourth proportional to 1,689,439.05, 2,331,407.31 and 915,050.61 is: 1,262,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,439.05 : 2,331,407.31 = 915,050.61 : x
  2. Step 2: Convert to fraction form
    1,689,439.05/2,331,407.31 = 915,050.61/x
  3. Step 3: Cross multiply
    1,689,439.05x = 2,331,407.31 × 915,050.61
  4. Step 4: Simplify right side
    1,689,439.05x = 2,133,355,681,173.96
  5. Step 5: Solve for x
    x = 2,133,355,681,173.96/1,689,439.05
  6. Step 6: Final answer
    x = 1,262,759.78

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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.