Home / 780,143.40-1,168,902.90-667,294.20

Finding the Fourth Proportional to 780,143.40, 1,168,902.90 and 667,294.20

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Solution

The fourth proportional to 780,143.40, 1,168,902.90 and 667,294.20 is: 999,818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.40 : 1,168,902.90 = 667,294.20 : x
  2. Step 2: Convert to fraction form
    780,143.40/1,168,902.90 = 667,294.20/x
  3. Step 3: Cross multiply
    780,143.40x = 1,168,902.90 × 667,294.20
  4. Step 4: Simplify right side
    780,143.40x = 780,002,125,533.18
  5. Step 5: Solve for x
    x = 780,002,125,533.18/780,143.40
  6. Step 6: Final answer
    x = 999,818.91

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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.