Home / 780,454.85-1,170,665.84-359,730.72

Finding the Fourth Proportional to 780,454.85, 1,170,665.84 and 359,730.72

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Solution

The fourth proportional to 780,454.85, 1,170,665.84 and 359,730.72 is: 539,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,454.85 : 1,170,665.84 = 359,730.72 : x
  2. Step 2: Convert to fraction form
    780,454.85/1,170,665.84 = 359,730.72/x
  3. Step 3: Cross multiply
    780,454.85x = 1,170,665.84 × 359,730.72
  4. Step 4: Simplify right side
    780,454.85x = 421,124,466,401.93
  5. Step 5: Solve for x
    x = 421,124,466,401.93/780,454.85
  6. Step 6: Final answer
    x = 539,588.51

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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.