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Finding the Fourth Proportional to 659,449.76, 909,751.73 and 387,394.93

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Solution

The fourth proportional to 659,449.76, 909,751.73 and 387,394.93 is: 534,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,449.76 : 909,751.73 = 387,394.93 : x
  2. Step 2: Convert to fraction form
    659,449.76/909,751.73 = 387,394.93/x
  3. Step 3: Cross multiply
    659,449.76x = 909,751.73 × 387,394.93
  4. Step 4: Simplify right side
    659,449.76x = 352,433,207,943.29
  5. Step 5: Solve for x
    x = 352,433,207,943.29/659,449.76
  6. Step 6: Final answer
    x = 534,435.27

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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.