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Finding the Fourth Proportional to 578,624.52, 798,372.90 and 349,219.20

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Solution

The fourth proportional to 578,624.52, 798,372.90 and 349,219.20 is: 481,844.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,624.52 : 798,372.90 = 349,219.20 : x
  2. Step 2: Convert to fraction form
    578,624.52/798,372.90 = 349,219.20/x
  3. Step 3: Cross multiply
    578,624.52x = 798,372.90 × 349,219.20
  4. Step 4: Simplify right side
    578,624.52x = 278,807,145,439.68
  5. Step 5: Solve for x
    x = 278,807,145,439.68/578,624.52
  6. Step 6: Final answer
    x = 481,844.68

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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.