Home / 780,023.90-1,170,035.85-380,920.70

Finding the Fourth Proportional to 780,023.90, 1,170,035.85 and 380,920.70

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Solution

The fourth proportional to 780,023.90, 1,170,035.85 and 380,920.70 is: 571,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,023.90 : 1,170,035.85 = 380,920.70 : x
  2. Step 2: Convert to fraction form
    780,023.90/1,170,035.85 = 380,920.70/x
  3. Step 3: Cross multiply
    780,023.90x = 1,170,035.85 × 380,920.70
  4. Step 4: Simplify right side
    780,023.90x = 445,690,875,007.10
  5. Step 5: Solve for x
    x = 445,690,875,007.10/780,023.90
  6. Step 6: Final answer
    x = 571,381.05

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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.