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Finding the Fourth Proportional to 704,857.96, 972,718.49 and 398,934.32

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Solution

The fourth proportional to 704,857.96, 972,718.49 and 398,934.32 is: 550,537.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,857.96 : 972,718.49 = 398,934.32 : x
  2. Step 2: Convert to fraction form
    704,857.96/972,718.49 = 398,934.32/x
  3. Step 3: Cross multiply
    704,857.96x = 972,718.49 × 398,934.32
  4. Step 4: Simplify right side
    704,857.96x = 388,050,789,359.58
  5. Step 5: Solve for x
    x = 388,050,789,359.58/704,857.96
  6. Step 6: Final answer
    x = 550,537.57

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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.