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Finding the Fourth Proportional to 668,884.79, 922,674.98 and 426,894.61

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Solution

The fourth proportional to 668,884.79, 922,674.98 and 426,894.61 is: 588,868.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,884.79 : 922,674.98 = 426,894.61 : x
  2. Step 2: Convert to fraction form
    668,884.79/922,674.98 = 426,894.61/x
  3. Step 3: Cross multiply
    668,884.79x = 922,674.98 × 426,894.61
  4. Step 4: Simplify right side
    668,884.79x = 393,884,971,302.70
  5. Step 5: Solve for x
    x = 393,884,971,302.70/668,884.79
  6. Step 6: Final answer
    x = 588,868.18

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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.