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Finding the Fourth Proportional to 564,363.54, 778,781.25 and 322,656.30

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Solution

The fourth proportional to 564,363.54, 778,781.25 and 322,656.30 is: 445,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,363.54 : 778,781.25 = 322,656.30 : x
  2. Step 2: Convert to fraction form
    564,363.54/778,781.25 = 322,656.30/x
  3. Step 3: Cross multiply
    564,363.54x = 778,781.25 × 322,656.30
  4. Step 4: Simplify right side
    564,363.54x = 251,278,676,634.38
  5. Step 5: Solve for x
    x = 251,278,676,634.38/564,363.54
  6. Step 6: Final answer
    x = 445,242.58

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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.