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Finding the Fourth Proportional to 504,331.20, 756,496.80 and 386,233.20

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Solution

The fourth proportional to 504,331.20, 756,496.80 and 386,233.20 is: 579,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,331.20 : 756,496.80 = 386,233.20 : x
  2. Step 2: Convert to fraction form
    504,331.20/756,496.80 = 386,233.20/x
  3. Step 3: Cross multiply
    504,331.20x = 756,496.80 × 386,233.20
  4. Step 4: Simplify right side
    504,331.20x = 292,184,179,853.76
  5. Step 5: Solve for x
    x = 292,184,179,853.76/504,331.20
  6. Step 6: Final answer
    x = 579,349.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.