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Finding the Fourth Proportional to 668,801.72, 922,909.74 and 366,971.96

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Solution

The fourth proportional to 668,801.72, 922,909.74 and 366,971.96 is: 506,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,801.72 : 922,909.74 = 366,971.96 : x
  2. Step 2: Convert to fraction form
    668,801.72/922,909.74 = 366,971.96/x
  3. Step 3: Cross multiply
    668,801.72x = 922,909.74 × 366,971.96
  4. Step 4: Simplify right side
    668,801.72x = 338,681,996,190.89
  5. Step 5: Solve for x
    x = 338,681,996,190.89/668,801.72
  6. Step 6: Final answer
    x = 506,401.20

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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.