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Finding the Fourth Proportional to 564,404.82, 778,920.48 and 322,697.58

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Solution

The fourth proportional to 564,404.82, 778,920.48 and 322,697.58 is: 445,346.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,404.82 : 778,920.48 = 322,697.58 : x
  2. Step 2: Convert to fraction form
    564,404.82/778,920.48 = 322,697.58/x
  3. Step 3: Cross multiply
    564,404.82x = 778,920.48 × 322,697.58
  4. Step 4: Simplify right side
    564,404.82x = 251,355,753,908.44
  5. Step 5: Solve for x
    x = 251,355,753,908.44/564,404.82
  6. Step 6: Final answer
    x = 445,346.58

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.