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Finding the Fourth Proportional to 617,309.16, 851,598.92 and 399,588.08

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Solution

The fourth proportional to 617,309.16, 851,598.92 and 399,588.08 is: 551,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,309.16 : 851,598.92 = 399,588.08 : x
  2. Step 2: Convert to fraction form
    617,309.16/851,598.92 = 399,588.08/x
  3. Step 3: Cross multiply
    617,309.16x = 851,598.92 × 399,588.08
  4. Step 4: Simplify right side
    617,309.16x = 340,288,771,116.94
  5. Step 5: Solve for x
    x = 340,288,771,116.94/617,309.16
  6. Step 6: Final answer
    x = 551,245.30

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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.