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Finding the Fourth Proportional to 704,827.73, 972,651.85 and 398,962.11

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Solution

The fourth proportional to 704,827.73, 972,651.85 and 398,962.11 is: 550,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,827.73 : 972,651.85 = 398,962.11 : x
  2. Step 2: Convert to fraction form
    704,827.73/972,651.85 = 398,962.11/x
  3. Step 3: Cross multiply
    704,827.73x = 972,651.85 × 398,962.11
  4. Step 4: Simplify right side
    704,827.73x = 388,051,231,550.28
  5. Step 5: Solve for x
    x = 388,051,231,550.28/704,827.73
  6. Step 6: Final answer
    x = 550,561.81

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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.