Home / 780,143.90-1,168,903.65-667,294.70

Finding the Fourth Proportional to 780,143.90, 1,168,903.65 and 667,294.70

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Solution

The fourth proportional to 780,143.90, 1,168,903.65 and 667,294.70 is: 999,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.90 : 1,168,903.65 = 667,294.70 : x
  2. Step 2: Convert to fraction form
    780,143.90/1,168,903.65 = 667,294.70/x
  3. Step 3: Cross multiply
    780,143.90x = 1,168,903.65 × 667,294.70
  4. Step 4: Simplify right side
    780,143.90x = 780,003,210,455.66
  5. Step 5: Solve for x
    x = 780,003,210,455.66/780,143.90
  6. Step 6: Final answer
    x = 999,819.66

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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.