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Finding the Fourth Proportional to 564,623.20, 779,133.72 and 309,965.68

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Solution

The fourth proportional to 564,623.20, 779,133.72 and 309,965.68 is: 427,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,623.20 : 779,133.72 = 309,965.68 : x
  2. Step 2: Convert to fraction form
    564,623.20/779,133.72 = 309,965.68/x
  3. Step 3: Cross multiply
    564,623.20x = 779,133.72 × 309,965.68
  4. Step 4: Simplify right side
    564,623.20x = 241,504,713,330.73
  5. Step 5: Solve for x
    x = 241,504,713,330.73/564,623.20
  6. Step 6: Final answer
    x = 427,727.22

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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.