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Finding the Fourth Proportional to 495,464.58, 683,718.17 and 280,606.22

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Solution

The fourth proportional to 495,464.58, 683,718.17 and 280,606.22 is: 387,223.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,464.58 : 683,718.17 = 280,606.22 : x
  2. Step 2: Convert to fraction form
    495,464.58/683,718.17 = 280,606.22/x
  3. Step 3: Cross multiply
    495,464.58x = 683,718.17 × 280,606.22
  4. Step 4: Simplify right side
    495,464.58x = 191,855,566,407.40
  5. Step 5: Solve for x
    x = 191,855,566,407.40/495,464.58
  6. Step 6: Final answer
    x = 387,223.58

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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.