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Finding the Fourth Proportional to 495,857.90, 744,564.45 and 285,905.90

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Solution

The fourth proportional to 495,857.90, 744,564.45 and 285,905.90 is: 429,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,857.90 : 744,564.45 = 285,905.90 : x
  2. Step 2: Convert to fraction form
    495,857.90/744,564.45 = 285,905.90/x
  3. Step 3: Cross multiply
    495,857.90x = 744,564.45 × 285,905.90
  4. Step 4: Simplify right side
    495,857.90x = 212,875,369,185.26
  5. Step 5: Solve for x
    x = 212,875,369,185.26/495,857.90
  6. Step 6: Final answer
    x = 429,307.21

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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.