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Finding the Fourth Proportional to 647,281.73, 893,253.49 and 356,904.23

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Solution

The fourth proportional to 647,281.73, 893,253.49 and 356,904.23 is: 492,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,281.73 : 893,253.49 = 356,904.23 : x
  2. Step 2: Convert to fraction form
    647,281.73/893,253.49 = 356,904.23/x
  3. Step 3: Cross multiply
    647,281.73x = 893,253.49 × 356,904.23
  4. Step 4: Simplify right side
    647,281.73x = 318,805,943,684.74
  5. Step 5: Solve for x
    x = 318,805,943,684.74/647,281.73
  6. Step 6: Final answer
    x = 492,530.42

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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.