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Finding the Fourth Proportional to 668,890.73, 922,683.16 and 426,900.55

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Solution

The fourth proportional to 668,890.73, 922,683.16 and 426,900.55 is: 588,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,890.73 : 922,683.16 = 426,900.55 : x
  2. Step 2: Convert to fraction form
    668,890.73/922,683.16 = 426,900.55/x
  3. Step 3: Cross multiply
    668,890.73x = 922,683.16 × 426,900.55
  4. Step 4: Simplify right side
    668,890.73x = 393,893,948,479.74
  5. Step 5: Solve for x
    x = 393,893,948,479.74/668,890.73
  6. Step 6: Final answer
    x = 588,876.38

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1.5x scale

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.