Home / 516,003.12-712,091.28-286,575.20

Finding the Fourth Proportional to 516,003.12, 712,091.28 and 286,575.20

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Solution

The fourth proportional to 516,003.12, 712,091.28 and 286,575.20 is: 395,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,003.12 : 712,091.28 = 286,575.20 : x
  2. Step 2: Convert to fraction form
    516,003.12/712,091.28 = 286,575.20/x
  3. Step 3: Cross multiply
    516,003.12x = 712,091.28 × 286,575.20
  4. Step 4: Simplify right side
    516,003.12x = 204,067,700,984.26
  5. Step 5: Solve for x
    x = 204,067,700,984.26/516,003.12
  6. Step 6: Final answer
    x = 395,477.65

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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.