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Finding the Fourth Proportional to 572,768.20, 857,111.10 and 498,701.80

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Solution

The fourth proportional to 572,768.20, 857,111.10 and 498,701.80 is: 746,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,768.20 : 857,111.10 = 498,701.80 : x
  2. Step 2: Convert to fraction form
    572,768.20/857,111.10 = 498,701.80/x
  3. Step 3: Cross multiply
    572,768.20x = 857,111.10 × 498,701.80
  4. Step 4: Simplify right side
    572,768.20x = 427,442,848,369.98
  5. Step 5: Solve for x
    x = 427,442,848,369.98/572,768.20
  6. Step 6: Final answer
    x = 746,275.45

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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.