Home / 642,656.45-886,831.74-370,708.11

Finding the Fourth Proportional to 642,656.45, 886,831.74 and 370,708.11

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Solution

The fourth proportional to 642,656.45, 886,831.74 and 370,708.11 is: 511,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,656.45 : 886,831.74 = 370,708.11 : x
  2. Step 2: Convert to fraction form
    642,656.45/886,831.74 = 370,708.11/x
  3. Step 3: Cross multiply
    642,656.45x = 886,831.74 × 370,708.11
  4. Step 4: Simplify right side
    642,656.45x = 328,755,718,223.41
  5. Step 5: Solve for x
    x = 328,755,718,223.41/642,656.45
  6. Step 6: Final answer
    x = 511,557.48

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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.