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Finding the Fourth Proportional to 704,854.46, 972,713.66 and 398,930.82

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Solution

The fourth proportional to 704,854.46, 972,713.66 and 398,930.82 is: 550,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,854.46 : 972,713.66 = 398,930.82 : x
  2. Step 2: Convert to fraction form
    704,854.46/972,713.66 = 398,930.82/x
  3. Step 3: Cross multiply
    704,854.46x = 972,713.66 × 398,930.82
  4. Step 4: Simplify right side
    704,854.46x = 388,045,456,014.35
  5. Step 5: Solve for x
    x = 388,045,456,014.35/704,854.46
  6. Step 6: Final answer
    x = 550,532.74

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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.