Home / 516,421.55-712,642.78-286,993.10

Finding the Fourth Proportional to 516,421.55, 712,642.78 and 286,993.10

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Solution

The fourth proportional to 516,421.55, 712,642.78 and 286,993.10 is: 396,039.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,421.55 : 712,642.78 = 286,993.10 : x
  2. Step 2: Convert to fraction form
    516,421.55/712,642.78 = 286,993.10/x
  3. Step 3: Cross multiply
    516,421.55x = 712,642.78 × 286,993.10
  4. Step 4: Simplify right side
    516,421.55x = 204,523,560,624.82
  5. Step 5: Solve for x
    x = 204,523,560,624.82/516,421.55
  6. Step 6: Final answer
    x = 396,039.94

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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.