Home / 687,648.56-948,940.08-381,707.24

Finding the Fourth Proportional to 687,648.56, 948,940.08 and 381,707.24

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Solution

The fourth proportional to 687,648.56, 948,940.08 and 381,707.24 is: 526,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,648.56 : 948,940.08 = 381,707.24 : x
  2. Step 2: Convert to fraction form
    687,648.56/948,940.08 = 381,707.24/x
  3. Step 3: Cross multiply
    687,648.56x = 948,940.08 × 381,707.24
  4. Step 4: Simplify right side
    687,648.56x = 362,217,298,862.18
  5. Step 5: Solve for x
    x = 362,217,298,862.18/687,648.56
  6. Step 6: Final answer
    x = 526,747.70

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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.