Home / 686,920.53-948,063.80-381,095.43

Finding the Fourth Proportional to 686,920.53, 948,063.80 and 381,095.43

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Solution

The fourth proportional to 686,920.53, 948,063.80 and 381,095.43 is: 525,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,920.53 : 948,063.80 = 381,095.43 : x
  2. Step 2: Convert to fraction form
    686,920.53/948,063.80 = 381,095.43/x
  3. Step 3: Cross multiply
    686,920.53x = 948,063.80 × 381,095.43
  4. Step 4: Simplify right side
    686,920.53x = 361,302,779,622.96
  5. Step 5: Solve for x
    x = 361,302,779,622.96/686,920.53
  6. Step 6: Final answer
    x = 525,974.65

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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.