Home / 1,340,865.20-2,011,297.80-915,712.40

Finding the Fourth Proportional to 1,340,865.20, 2,011,297.80 and 915,712.40

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Solution

The fourth proportional to 1,340,865.20, 2,011,297.80 and 915,712.40 is: 1,373,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,865.20 : 2,011,297.80 = 915,712.40 : x
  2. Step 2: Convert to fraction form
    1,340,865.20/2,011,297.80 = 915,712.40/x
  3. Step 3: Cross multiply
    1,340,865.20x = 2,011,297.80 × 915,712.40
  4. Step 4: Simplify right side
    1,340,865.20x = 1,841,770,335,552.72
  5. Step 5: Solve for x
    x = 1,841,770,335,552.72/1,340,865.20
  6. Step 6: Final answer
    x = 1,373,568.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.