Home / 563,745.58-777,963.09-309,096.34

Finding the Fourth Proportional to 563,745.58, 777,963.09 and 309,096.34

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Solution

The fourth proportional to 563,745.58, 777,963.09 and 309,096.34 is: 426,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,745.58 : 777,963.09 = 309,096.34 : x
  2. Step 2: Convert to fraction form
    563,745.58/777,963.09 = 309,096.34/x
  3. Step 3: Cross multiply
    563,745.58x = 777,963.09 × 309,096.34
  4. Step 4: Simplify right side
    563,745.58x = 240,465,543,774.09
  5. Step 5: Solve for x
    x = 240,465,543,774.09/563,745.58
  6. Step 6: Final answer
    x = 426,549.76

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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.