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Finding the Fourth Proportional to 559,552.38, 771,259.95 and 395,997.90

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Solution

The fourth proportional to 559,552.38, 771,259.95 and 395,997.90 is: 545,824.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,552.38 : 771,259.95 = 395,997.90 : x
  2. Step 2: Convert to fraction form
    559,552.38/771,259.95 = 395,997.90/x
  3. Step 3: Cross multiply
    559,552.38x = 771,259.95 × 395,997.90
  4. Step 4: Simplify right side
    559,552.38x = 305,417,320,554.11
  5. Step 5: Solve for x
    x = 305,417,320,554.11/559,552.38
  6. Step 6: Final answer
    x = 545,824.36

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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.