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Finding the Fourth Proportional to 495,995.66, 684,479.76 and 275,237.48

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Solution

The fourth proportional to 495,995.66, 684,479.76 and 275,237.48 is: 379,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,995.66 : 684,479.76 = 275,237.48 : x
  2. Step 2: Convert to fraction form
    495,995.66/684,479.76 = 275,237.48/x
  3. Step 3: Cross multiply
    495,995.66x = 684,479.76 × 275,237.48
  4. Step 4: Simplify right side
    495,995.66x = 188,394,484,932.46
  5. Step 5: Solve for x
    x = 188,394,484,932.46/495,995.66
  6. Step 6: Final answer
    x = 379,830.91

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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.