Home / 687,300.93-948,480.44-381,378.51

Finding the Fourth Proportional to 687,300.93, 948,480.44 and 381,378.51

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Solution

The fourth proportional to 687,300.93, 948,480.44 and 381,378.51 is: 526,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,300.93 : 948,480.44 = 381,378.51 : x
  2. Step 2: Convert to fraction form
    687,300.93/948,480.44 = 381,378.51/x
  3. Step 3: Cross multiply
    687,300.93x = 948,480.44 × 381,378.51
  4. Step 4: Simplify right side
    687,300.93x = 361,730,055,064.45
  5. Step 5: Solve for x
    x = 361,730,055,064.45/687,300.93
  6. Step 6: Final answer
    x = 526,305.20

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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.