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Finding the Fourth Proportional to 724,023.81, 998,894.48 and 451,988.42

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Solution

The fourth proportional to 724,023.81, 998,894.48 and 451,988.42 is: 623,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,023.81 : 998,894.48 = 451,988.42 : x
  2. Step 2: Convert to fraction form
    724,023.81/998,894.48 = 451,988.42/x
  3. Step 3: Cross multiply
    724,023.81x = 998,894.48 × 451,988.42
  4. Step 4: Simplify right side
    724,023.81x = 451,488,730,507.51
  5. Step 5: Solve for x
    x = 451,488,730,507.51/724,023.81
  6. Step 6: Final answer
    x = 623,582.71

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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.