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Finding the Fourth Proportional to 647,366.33, 893,418.70 and 357,034.68

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Solution

The fourth proportional to 647,366.33, 893,418.70 and 357,034.68 is: 492,737.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,366.33 : 893,418.70 = 357,034.68 : x
  2. Step 2: Convert to fraction form
    647,366.33/893,418.70 = 357,034.68/x
  3. Step 3: Cross multiply
    647,366.33x = 893,418.70 × 357,034.68
  4. Step 4: Simplify right side
    647,366.33x = 318,981,462,786.65
  5. Step 5: Solve for x
    x = 318,981,462,786.65/647,366.33
  6. Step 6: Final answer
    x = 492,737.19

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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.