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Finding the Fourth Proportional to 495,516.51, 683,801.31 and 288,771.72

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Solution

The fourth proportional to 495,516.51, 683,801.31 and 288,771.72 is: 398,498.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,516.51 : 683,801.31 = 288,771.72 : x
  2. Step 2: Convert to fraction form
    495,516.51/683,801.31 = 288,771.72/x
  3. Step 3: Cross multiply
    495,516.51x = 683,801.31 × 288,771.72
  4. Step 4: Simplify right side
    495,516.51x = 197,462,480,426.95
  5. Step 5: Solve for x
    x = 197,462,480,426.95/495,516.51
  6. Step 6: Final answer
    x = 398,498.29

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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.