Home / 686,920.27-948,063.45-381,095.18

Finding the Fourth Proportional to 686,920.27, 948,063.45 and 381,095.18

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Solution

The fourth proportional to 686,920.27, 948,063.45 and 381,095.18 is: 525,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,920.27 : 948,063.45 = 381,095.18 : x
  2. Step 2: Convert to fraction form
    686,920.27/948,063.45 = 381,095.18/x
  3. Step 3: Cross multiply
    686,920.27x = 948,063.45 × 381,095.18
  4. Step 4: Simplify right side
    686,920.27x = 361,302,411,129.17
  5. Step 5: Solve for x
    x = 361,302,411,129.17/686,920.27
  6. Step 6: Final answer
    x = 525,974.30

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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.