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Finding the Fourth Proportional to 564,921.32, 779,588.75 and 306,796.46

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Solution

The fourth proportional to 564,921.32, 779,588.75 and 306,796.46 is: 423,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,921.32 : 779,588.75 = 306,796.46 : x
  2. Step 2: Convert to fraction form
    564,921.32/779,588.75 = 306,796.46/x
  3. Step 3: Cross multiply
    564,921.32x = 779,588.75 × 306,796.46
  4. Step 4: Simplify right side
    564,921.32x = 239,175,065,624.87
  5. Step 5: Solve for x
    x = 239,175,065,624.87/564,921.32
  6. Step 6: Final answer
    x = 423,377.66

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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.