Home / 516,217.60-712,357.14-286,790.98

Finding the Fourth Proportional to 516,217.60, 712,357.14 and 286,790.98

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Solution

The fourth proportional to 516,217.60, 712,357.14 and 286,790.98 is: 395,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,217.60 : 712,357.14 = 286,790.98 : x
  2. Step 2: Convert to fraction form
    516,217.60/712,357.14 = 286,790.98/x
  3. Step 3: Cross multiply
    516,217.60x = 712,357.14 × 286,790.98
  4. Step 4: Simplify right side
    516,217.60x = 204,297,602,290.60
  5. Step 5: Solve for x
    x = 204,297,602,290.60/516,217.60
  6. Step 6: Final answer
    x = 395,758.69

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Double scale
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Similar ratio
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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.