Home / 713,826.15-985,107.65-391,549.83

Finding the Fourth Proportional to 713,826.15, 985,107.65 and 391,549.83

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Solution

The fourth proportional to 713,826.15, 985,107.65 and 391,549.83 is: 540,353.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,826.15 : 985,107.65 = 391,549.83 : x
  2. Step 2: Convert to fraction form
    713,826.15/985,107.65 = 391,549.83/x
  3. Step 3: Cross multiply
    713,826.15x = 985,107.65 × 391,549.83
  4. Step 4: Simplify right side
    713,826.15x = 385,718,732,889.20
  5. Step 5: Solve for x
    x = 385,718,732,889.20/713,826.15
  6. Step 6: Final answer
    x = 540,353.88

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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.