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Finding the Fourth Proportional to 851,997.72, 1,175,813.88 and 489,538.92

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Solution

The fourth proportional to 851,997.72, 1,175,813.88 and 489,538.92 is: 675,596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,997.72 : 1,175,813.88 = 489,538.92 : x
  2. Step 2: Convert to fraction form
    851,997.72/1,175,813.88 = 489,538.92/x
  3. Step 3: Cross multiply
    851,997.72x = 1,175,813.88 × 489,538.92
  4. Step 4: Simplify right side
    851,997.72x = 575,606,656,936.21
  5. Step 5: Solve for x
    x = 575,606,656,936.21/851,997.72
  6. Step 6: Final answer
    x = 675,596.48

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1.5x scale

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.