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Finding the Fourth Proportional to 617,607.06, 851,620.94 and 402,347.94

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Solution

The fourth proportional to 617,607.06, 851,620.94 and 402,347.94 is: 554,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,607.06 : 851,620.94 = 402,347.94 : x
  2. Step 2: Convert to fraction form
    617,607.06/851,620.94 = 402,347.94/x
  3. Step 3: Cross multiply
    617,607.06x = 851,620.94 × 402,347.94
  4. Step 4: Simplify right side
    617,607.06x = 342,647,930,869.86
  5. Step 5: Solve for x
    x = 342,647,930,869.86/617,607.06
  6. Step 6: Final answer
    x = 554,799.25

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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.