Home / 687,572.15-948,831.77-381,632.72

Finding the Fourth Proportional to 687,572.15, 948,831.77 and 381,632.72

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Solution

The fourth proportional to 687,572.15, 948,831.77 and 381,632.72 is: 526,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,572.15 : 948,831.77 = 381,632.72 : x
  2. Step 2: Convert to fraction form
    687,572.15/948,831.77 = 381,632.72/x
  3. Step 3: Cross multiply
    687,572.15x = 948,831.77 × 381,632.72
  4. Step 4: Simplify right side
    687,572.15x = 362,105,245,417.44
  5. Step 5: Solve for x
    x = 362,105,245,417.44/687,572.15
  6. Step 6: Final answer
    x = 526,643.27

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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.