Home / 960,017.20-1,440,025.80-642,756.40

Finding the Fourth Proportional to 960,017.20, 1,440,025.80 and 642,756.40

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Solution

The fourth proportional to 960,017.20, 1,440,025.80 and 642,756.40 is: 964,134.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,017.20 : 1,440,025.80 = 642,756.40 : x
  2. Step 2: Convert to fraction form
    960,017.20/1,440,025.80 = 642,756.40/x
  3. Step 3: Cross multiply
    960,017.20x = 1,440,025.80 × 642,756.40
  4. Step 4: Simplify right side
    960,017.20x = 925,585,799,115.12
  5. Step 5: Solve for x
    x = 925,585,799,115.12/960,017.20
  6. Step 6: Final answer
    x = 964,134.60

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Double scale
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Similar ratio
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1.5x scale

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.