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Finding the Fourth Proportional to 617,117.97, 851,701.58 and 345,200.97

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Solution

The fourth proportional to 617,117.97, 851,701.58 and 345,200.97 is: 476,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,117.97 : 851,701.58 = 345,200.97 : x
  2. Step 2: Convert to fraction form
    617,117.97/851,701.58 = 345,200.97/x
  3. Step 3: Cross multiply
    617,117.97x = 851,701.58 × 345,200.97
  4. Step 4: Simplify right side
    617,117.97x = 294,008,216,270.67
  5. Step 5: Solve for x
    x = 294,008,216,270.67/617,117.97
  6. Step 6: Final answer
    x = 476,421.41

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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.