Home / 780,144.90-1,168,905.15-667,295.70

Finding the Fourth Proportional to 780,144.90, 1,168,905.15 and 667,295.70

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Solution

The fourth proportional to 780,144.90, 1,168,905.15 and 667,295.70 is: 999,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,144.90 : 1,168,905.15 = 667,295.70 : x
  2. Step 2: Convert to fraction form
    780,144.90/1,168,905.15 = 667,295.70/x
  3. Step 3: Cross multiply
    780,144.90x = 1,168,905.15 × 667,295.70
  4. Step 4: Simplify right side
    780,144.90x = 780,005,380,302.86
  5. Step 5: Solve for x
    x = 780,005,380,302.86/780,144.90
  6. Step 6: Final answer
    x = 999,821.16

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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.