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Finding the Fourth Proportional to 668,376.68, 922,332.58 and 399,945.32

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Solution

The fourth proportional to 668,376.68, 922,332.58 and 399,945.32 is: 551,908.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,376.68 : 922,332.58 = 399,945.32 : x
  2. Step 2: Convert to fraction form
    668,376.68/922,332.58 = 399,945.32/x
  3. Step 3: Cross multiply
    668,376.68x = 922,332.58 × 399,945.32
  4. Step 4: Simplify right side
    668,376.68x = 368,882,598,854.53
  5. Step 5: Solve for x
    x = 368,882,598,854.53/668,376.68
  6. Step 6: Final answer
    x = 551,908.24

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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.