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Finding the Fourth Proportional to 704,676.60, 972,440.24 and 398,747.43

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Solution

The fourth proportional to 704,676.60, 972,440.24 and 398,747.43 is: 550,263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,676.60 : 972,440.24 = 398,747.43 : x
  2. Step 2: Convert to fraction form
    704,676.60/972,440.24 = 398,747.43/x
  3. Step 3: Cross multiply
    704,676.60x = 972,440.24 × 398,747.43
  4. Step 4: Simplify right side
    704,676.60x = 387,758,044,534.85
  5. Step 5: Solve for x
    x = 387,758,044,534.85/704,676.60
  6. Step 6: Final answer
    x = 550,263.83

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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.