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Finding the Fourth Proportional to 516,426.28, 712,652.76 and 286,982.80

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Solution

The fourth proportional to 516,426.28, 712,652.76 and 286,982.80 is: 396,027.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,426.28 : 712,652.76 = 286,982.80 : x
  2. Step 2: Convert to fraction form
    516,426.28/712,652.76 = 286,982.80/x
  3. Step 3: Cross multiply
    516,426.28x = 712,652.76 × 286,982.80
  4. Step 4: Simplify right side
    516,426.28x = 204,519,084,492.53
  5. Step 5: Solve for x
    x = 204,519,084,492.53/516,426.28
  6. Step 6: Final answer
    x = 396,027.65

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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.