Home / 840,633.72-1,260,938.34-391,103.16

Finding the Fourth Proportional to 840,633.72, 1,260,938.34 and 391,103.16

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Solution

The fourth proportional to 840,633.72, 1,260,938.34 and 391,103.16 is: 586,649.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,633.72 : 1,260,938.34 = 391,103.16 : x
  2. Step 2: Convert to fraction form
    840,633.72/1,260,938.34 = 391,103.16/x
  3. Step 3: Cross multiply
    840,633.72x = 1,260,938.34 × 391,103.16
  4. Step 4: Simplify right side
    840,633.72x = 493,156,969,339.15
  5. Step 5: Solve for x
    x = 493,156,969,339.15/840,633.72
  6. Step 6: Final answer
    x = 586,649.05

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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.