Home / 646,560.15-892,217.93-356,115.20

Finding the Fourth Proportional to 646,560.15, 892,217.93 and 356,115.20

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Solution

The fourth proportional to 646,560.15, 892,217.93 and 356,115.20 is: 491,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,560.15 : 892,217.93 = 356,115.20 : x
  2. Step 2: Convert to fraction form
    646,560.15/892,217.93 = 356,115.20/x
  3. Step 3: Cross multiply
    646,560.15x = 892,217.93 × 356,115.20
  4. Step 4: Simplify right side
    646,560.15x = 317,732,360,343.87
  5. Step 5: Solve for x
    x = 317,732,360,343.87/646,560.15
  6. Step 6: Final answer
    x = 491,419.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.