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Finding the Fourth Proportional to 495,574.88, 683,871.38 and 280,710.62

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Solution

The fourth proportional to 495,574.88, 683,871.38 and 280,710.62 is: 387,368.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,574.88 : 683,871.38 = 280,710.62 : x
  2. Step 2: Convert to fraction form
    495,574.88/683,871.38 = 280,710.62/x
  3. Step 3: Cross multiply
    495,574.88x = 683,871.38 × 280,710.62
  4. Step 4: Simplify right side
    495,574.88x = 191,969,959,080.06
  5. Step 5: Solve for x
    x = 191,969,959,080.06/495,574.88
  6. Step 6: Final answer
    x = 387,368.22

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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.