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Finding the Fourth Proportional to 546,409.73, 815,340.77 and 489,671.66

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Solution

The fourth proportional to 546,409.73, 815,340.77 and 489,671.66 is: 730,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,409.73 : 815,340.77 = 489,671.66 : x
  2. Step 2: Convert to fraction form
    546,409.73/815,340.77 = 489,671.66/x
  3. Step 3: Cross multiply
    546,409.73x = 815,340.77 × 489,671.66
  4. Step 4: Simplify right side
    546,409.73x = 399,249,261,786.52
  5. Step 5: Solve for x
    x = 399,249,261,786.52/546,409.73
  6. Step 6: Final answer
    x = 730,677.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.