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Finding the Fourth Proportional to 495,515.68, 683,796 and 280,675.60

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Solution

The fourth proportional to 495,515.68, 683,796 and 280,675.60 is: 387,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,515.68 : 683,796 = 280,675.60 : x
  2. Step 2: Convert to fraction form
    495,515.68/683,796 = 280,675.60/x
  3. Step 3: Cross multiply
    495,515.68x = 683,796 × 280,675.60
  4. Step 4: Simplify right side
    495,515.68x = 191,924,852,577.60
  5. Step 5: Solve for x
    x = 191,924,852,577.60/495,515.68
  6. Step 6: Final answer
    x = 387,323.47

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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.