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Finding the Fourth Proportional to 516,486.07, 712,750.07 and 287,036.15

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Solution

The fourth proportional to 516,486.07, 712,750.07 and 287,036.15 is: 396,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,486.07 : 712,750.07 = 287,036.15 : x
  2. Step 2: Convert to fraction form
    516,486.07/712,750.07 = 287,036.15/x
  3. Step 3: Cross multiply
    516,486.07x = 712,750.07 × 287,036.15
  4. Step 4: Simplify right side
    516,486.07x = 204,585,034,569.85
  5. Step 5: Solve for x
    x = 204,585,034,569.85/516,486.07
  6. Step 6: Final answer
    x = 396,109.50

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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.