Home / 513,729.12-708,935.57-284,286.26

Finding the Fourth Proportional to 513,729.12, 708,935.57 and 284,286.26

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Solution

The fourth proportional to 513,729.12, 708,935.57 and 284,286.26 is: 392,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,729.12 : 708,935.57 = 284,286.26 : x
  2. Step 2: Convert to fraction form
    513,729.12/708,935.57 = 284,286.26/x
  3. Step 3: Cross multiply
    513,729.12x = 708,935.57 × 284,286.26
  4. Step 4: Simplify right side
    513,729.12x = 201,540,644,259.32
  5. Step 5: Solve for x
    x = 201,540,644,259.32/513,729.12
  6. Step 6: Final answer
    x = 392,309.17

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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.