Home / 563,942.37-778,289.67-309,342.75

Finding the Fourth Proportional to 563,942.37, 778,289.67 and 309,342.75

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Solution

The fourth proportional to 563,942.37, 778,289.67 and 309,342.75 is: 426,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,942.37 : 778,289.67 = 309,342.75 : x
  2. Step 2: Convert to fraction form
    563,942.37/778,289.67 = 309,342.75/x
  3. Step 3: Cross multiply
    563,942.37x = 778,289.67 × 309,342.75
  4. Step 4: Simplify right side
    563,942.37x = 240,758,266,814.39
  5. Step 5: Solve for x
    x = 240,758,266,814.39/563,942.37
  6. Step 6: Final answer
    x = 426,919.98

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Half scale
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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.