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Finding the Fourth Proportional to 495,980.62, 684,409.47 and 275,223.44

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Solution

The fourth proportional to 495,980.62, 684,409.47 and 275,223.44 is: 379,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,980.62 : 684,409.47 = 275,223.44 : x
  2. Step 2: Convert to fraction form
    495,980.62/684,409.47 = 275,223.44/x
  3. Step 3: Cross multiply
    495,980.62x = 684,409.47 × 275,223.44
  4. Step 4: Simplify right side
    495,980.62x = 188,365,528,701.98
  5. Step 5: Solve for x
    x = 188,365,528,701.98/495,980.62
  6. Step 6: Final answer
    x = 379,784.05

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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.