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Finding the Fourth Proportional to 617,316.60, 851,892.30 and 349,054.20

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Solution

The fourth proportional to 617,316.60, 851,892.30 and 349,054.20 is: 481,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,316.60 : 851,892.30 = 349,054.20 : x
  2. Step 2: Convert to fraction form
    617,316.60/851,892.30 = 349,054.20/x
  3. Step 3: Cross multiply
    617,316.60x = 851,892.30 × 349,054.20
  4. Step 4: Simplify right side
    617,316.60x = 297,356,585,262.66
  5. Step 5: Solve for x
    x = 297,356,585,262.66/617,316.60
  6. Step 6: Final answer
    x = 481,692.19

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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.