Home / 687,106.19-948,207.67-381,182.59

Finding the Fourth Proportional to 687,106.19, 948,207.67 and 381,182.59

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Solution

The fourth proportional to 687,106.19, 948,207.67 and 381,182.59 is: 526,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,106.19 : 948,207.67 = 381,182.59 : x
  2. Step 2: Convert to fraction form
    687,106.19/948,207.67 = 381,182.59/x
  3. Step 3: Cross multiply
    687,106.19x = 948,207.67 × 381,182.59
  4. Step 4: Simplify right side
    687,106.19x = 361,440,255,740.77
  5. Step 5: Solve for x
    x = 361,440,255,740.77/687,106.19
  6. Step 6: Final answer
    x = 526,032.60

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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.