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Finding the Fourth Proportional to 668,888.73, 922,680.40 and 426,898.55

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Solution

The fourth proportional to 668,888.73, 922,680.40 and 426,898.55 is: 588,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,888.73 : 922,680.40 = 426,898.55 : x
  2. Step 2: Convert to fraction form
    668,888.73/922,680.40 = 426,898.55/x
  3. Step 3: Cross multiply
    668,888.73x = 922,680.40 × 426,898.55
  4. Step 4: Simplify right side
    668,888.73x = 393,890,924,873.42
  5. Step 5: Solve for x
    x = 393,890,924,873.42/668,888.73
  6. Step 6: Final answer
    x = 588,873.62

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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.