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Finding the Fourth Proportional to 486,988.54, 672,231.76 and 435,911.15

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Solution

The fourth proportional to 486,988.54, 672,231.76 and 435,911.15 is: 601,725.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,988.54 : 672,231.76 = 435,911.15 : x
  2. Step 2: Convert to fraction form
    486,988.54/672,231.76 = 435,911.15/x
  3. Step 3: Cross multiply
    486,988.54x = 672,231.76 × 435,911.15
  4. Step 4: Simplify right side
    486,988.54x = 293,033,320,158.93
  5. Step 5: Solve for x
    x = 293,033,320,158.93/486,988.54
  6. Step 6: Final answer
    x = 601,725.29

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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.