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Finding the Fourth Proportional to 495,855.90, 744,561.45 and 285,903.90

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Solution

The fourth proportional to 495,855.90, 744,561.45 and 285,903.90 is: 429,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,855.90 : 744,561.45 = 285,903.90 : x
  2. Step 2: Convert to fraction form
    495,855.90/744,561.45 = 285,903.90/x
  3. Step 3: Cross multiply
    495,855.90x = 744,561.45 × 285,903.90
  4. Step 4: Simplify right side
    495,855.90x = 212,873,022,344.66
  5. Step 5: Solve for x
    x = 212,873,022,344.66/495,855.90
  6. Step 6: Final answer
    x = 429,304.20

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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.