Home / 513,685.04-708,916.92-287,345.84

Finding the Fourth Proportional to 513,685.04, 708,916.92 and 287,345.84

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Solution

The fourth proportional to 513,685.04, 708,916.92 and 287,345.84 is: 396,554.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,685.04 : 708,916.92 = 287,345.84 : x
  2. Step 2: Convert to fraction form
    513,685.04/708,916.92 = 287,345.84/x
  3. Step 3: Cross multiply
    513,685.04x = 708,916.92 × 287,345.84
  4. Step 4: Simplify right side
    513,685.04x = 203,704,327,867.61
  5. Step 5: Solve for x
    x = 203,704,327,867.61/513,685.04
  6. Step 6: Final answer
    x = 396,554.92

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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.