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Finding the Fourth Proportional to 611,809.72, 844,298.32 and 339,870.22

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Solution

The fourth proportional to 611,809.72, 844,298.32 and 339,870.22 is: 469,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,809.72 : 844,298.32 = 339,870.22 : x
  2. Step 2: Convert to fraction form
    611,809.72/844,298.32 = 339,870.22/x
  3. Step 3: Cross multiply
    611,809.72x = 844,298.32 × 339,870.22
  4. Step 4: Simplify right side
    611,809.72x = 286,951,855,764.03
  5. Step 5: Solve for x
    x = 286,951,855,764.03/611,809.72
  6. Step 6: Final answer
    x = 469,021.41

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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.