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Finding the Fourth Proportional to 617,081.79, 851,561.60 and 348,809.79

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Solution

The fourth proportional to 617,081.79, 851,561.60 and 348,809.79 is: 481,351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,081.79 : 851,561.60 = 348,809.79 : x
  2. Step 2: Convert to fraction form
    617,081.79/851,561.60 = 348,809.79/x
  3. Step 3: Cross multiply
    617,081.79x = 851,561.60 × 348,809.79
  4. Step 4: Simplify right side
    617,081.79x = 297,033,021,124.02
  5. Step 5: Solve for x
    x = 297,033,021,124.02/617,081.79
  6. Step 6: Final answer
    x = 481,351.14

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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.