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Finding the Fourth Proportional to 668,886.05, 922,676.70 and 426,895.86

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Solution

The fourth proportional to 668,886.05, 922,676.70 and 426,895.86 is: 588,869.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,886.05 : 922,676.70 = 426,895.86 : x
  2. Step 2: Convert to fraction form
    668,886.05/922,676.70 = 426,895.86/x
  3. Step 3: Cross multiply
    668,886.05x = 922,676.70 × 426,895.86
  4. Step 4: Simplify right side
    668,886.05x = 393,886,863,348.46
  5. Step 5: Solve for x
    x = 393,886,863,348.46/668,886.05
  6. Step 6: Final answer
    x = 588,869.91

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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.