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Finding the Fourth Proportional to 668,718.83, 922,831.88 and 382,245.07

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Solution

The fourth proportional to 668,718.83, 922,831.88 and 382,245.07 is: 527,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,718.83 : 922,831.88 = 382,245.07 : x
  2. Step 2: Convert to fraction form
    668,718.83/922,831.88 = 382,245.07/x
  3. Step 3: Cross multiply
    668,718.83x = 922,831.88 × 382,245.07
  4. Step 4: Simplify right side
    668,718.83x = 352,747,932,350.53
  5. Step 5: Solve for x
    x = 352,747,932,350.53/668,718.83
  6. Step 6: Final answer
    x = 527,498.13

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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.