Home / 687,433.01-948,714.17-381,503.84

Finding the Fourth Proportional to 687,433.01, 948,714.17 and 381,503.84

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Solution

The fourth proportional to 687,433.01, 948,714.17 and 381,503.84 is: 526,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,433.01 : 948,714.17 = 381,503.84 : x
  2. Step 2: Convert to fraction form
    687,433.01/948,714.17 = 381,503.84/x
  3. Step 3: Cross multiply
    687,433.01x = 948,714.17 × 381,503.84
  4. Step 4: Simplify right side
    687,433.01x = 361,938,092,266.32
  5. Step 5: Solve for x
    x = 361,938,092,266.32/687,433.01
  6. Step 6: Final answer
    x = 526,506.71

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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.