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Finding the Fourth Proportional to 578,578.44, 864,349.22 and 374,512.17

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Solution

The fourth proportional to 578,578.44, 864,349.22 and 374,512.17 is: 559,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,578.44 : 864,349.22 = 374,512.17 : x
  2. Step 2: Convert to fraction form
    578,578.44/864,349.22 = 374,512.17/x
  3. Step 3: Cross multiply
    578,578.44x = 864,349.22 × 374,512.17
  4. Step 4: Simplify right side
    578,578.44x = 323,709,300,147.45
  5. Step 5: Solve for x
    x = 323,709,300,147.45/578,578.44
  6. Step 6: Final answer
    x = 559,490.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.