Home / 1,152,555.06-1,590,734.16-687,438.78

Finding the Fourth Proportional to 1,152,555.06, 1,590,734.16 and 687,438.78

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Solution

The fourth proportional to 1,152,555.06, 1,590,734.16 and 687,438.78 is: 948,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,555.06 : 1,590,734.16 = 687,438.78 : x
  2. Step 2: Convert to fraction form
    1,152,555.06/1,590,734.16 = 687,438.78/x
  3. Step 3: Cross multiply
    1,152,555.06x = 1,590,734.16 × 687,438.78
  4. Step 4: Simplify right side
    1,152,555.06x = 1,093,532,350,254.72
  5. Step 5: Solve for x
    x = 1,093,532,350,254.72/1,152,555.06
  6. Step 6: Final answer
    x = 948,789.68

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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.