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Finding the Fourth Proportional to 486,879.10, 672,080.66 and 435,801.71

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Solution

The fourth proportional to 486,879.10, 672,080.66 and 435,801.71 is: 601,574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,879.10 : 672,080.66 = 435,801.71 : x
  2. Step 2: Convert to fraction form
    486,879.10/672,080.66 = 435,801.71/x
  3. Step 3: Cross multiply
    486,879.10x = 672,080.66 × 435,801.71
  4. Step 4: Simplify right side
    486,879.10x = 292,893,902,021.38
  5. Step 5: Solve for x
    x = 292,893,902,021.38/486,879.10
  6. Step 6: Final answer
    x = 601,574.20

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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.