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Finding the Fourth Proportional to 617,042.26, 851,515.86 and 345,109.06

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Solution

The fourth proportional to 617,042.26, 851,515.86 and 345,109.06 is: 476,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,042.26 : 851,515.86 = 345,109.06 : x
  2. Step 2: Convert to fraction form
    617,042.26/851,515.86 = 345,109.06/x
  3. Step 3: Cross multiply
    617,042.26x = 851,515.86 × 345,109.06
  4. Step 4: Simplify right side
    617,042.26x = 293,865,838,019.69
  5. Step 5: Solve for x
    x = 293,865,838,019.69/617,042.26
  6. Step 6: Final answer
    x = 476,249.13

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1.5x scale

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.