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Finding the Fourth Proportional to 612,715.52, 845,488.19 and 354,540.98

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Solution

The fourth proportional to 612,715.52, 845,488.19 and 354,540.98 is: 489,232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,715.52 : 845,488.19 = 354,540.98 : x
  2. Step 2: Convert to fraction form
    612,715.52/845,488.19 = 354,540.98/x
  3. Step 3: Cross multiply
    612,715.52x = 845,488.19 × 354,540.98
  4. Step 4: Simplify right side
    612,715.52x = 299,760,205,460.88
  5. Step 5: Solve for x
    x = 299,760,205,460.88/612,715.52
  6. Step 6: Final answer
    x = 489,232.28

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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.