Home / 511,086.15-705,299.85-307,140.18

Finding the Fourth Proportional to 511,086.15, 705,299.85 and 307,140.18

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Solution

The fourth proportional to 511,086.15, 705,299.85 and 307,140.18 is: 423,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,086.15 : 705,299.85 = 307,140.18 : x
  2. Step 2: Convert to fraction form
    511,086.15/705,299.85 = 307,140.18/x
  3. Step 3: Cross multiply
    511,086.15x = 705,299.85 × 307,140.18
  4. Step 4: Simplify right side
    511,086.15x = 216,625,922,882.97
  5. Step 5: Solve for x
    x = 216,625,922,882.97/511,086.15
  6. Step 6: Final answer
    x = 423,854.03

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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.