Home / 915,639.20-1,373,458.80-617,040.80

Finding the Fourth Proportional to 915,639.20, 1,373,458.80 and 617,040.80

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Solution

The fourth proportional to 915,639.20, 1,373,458.80 and 617,040.80 is: 925,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,639.20 : 1,373,458.80 = 617,040.80 : x
  2. Step 2: Convert to fraction form
    915,639.20/1,373,458.80 = 617,040.80/x
  3. Step 3: Cross multiply
    915,639.20x = 1,373,458.80 × 617,040.80
  4. Step 4: Simplify right side
    915,639.20x = 847,480,116,719.04
  5. Step 5: Solve for x
    x = 847,480,116,719.04/915,639.20
  6. Step 6: Final answer
    x = 925,561.20

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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.