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Finding the Fourth Proportional to 612,602.97, 918,304.55 and 342,862.85

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Solution

The fourth proportional to 612,602.97, 918,304.55 and 342,862.85 is: 513,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,602.97 : 918,304.55 = 342,862.85 : x
  2. Step 2: Convert to fraction form
    612,602.97/918,304.55 = 342,862.85/x
  3. Step 3: Cross multiply
    612,602.97x = 918,304.55 × 342,862.85
  4. Step 4: Simplify right side
    612,602.97x = 314,852,515,180.97
  5. Step 5: Solve for x
    x = 314,852,515,180.97/612,602.97
  6. Step 6: Final answer
    x = 513,958.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.