Home / 858,941.74-1,288,150.15-409,425.78

Finding the Fourth Proportional to 858,941.74, 1,288,150.15 and 409,425.78

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Solution

The fourth proportional to 858,941.74, 1,288,150.15 and 409,425.78 is: 614,013.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,941.74 : 1,288,150.15 = 409,425.78 : x
  2. Step 2: Convert to fraction form
    858,941.74/1,288,150.15 = 409,425.78/x
  3. Step 3: Cross multiply
    858,941.74x = 1,288,150.15 × 409,425.78
  4. Step 4: Simplify right side
    858,941.74x = 527,401,879,920.87
  5. Step 5: Solve for x
    x = 527,401,879,920.87/858,941.74
  6. Step 6: Final answer
    x = 614,013.57

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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.