Home / 563,949.37-778,253.97-309,302.38

Finding the Fourth Proportional to 563,949.37, 778,253.97 and 309,302.38

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Solution

The fourth proportional to 563,949.37, 778,253.97 and 309,302.38 is: 426,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,949.37 : 778,253.97 = 309,302.38 : x
  2. Step 2: Convert to fraction form
    563,949.37/778,253.97 = 309,302.38/x
  3. Step 3: Cross multiply
    563,949.37x = 778,253.97 × 309,302.38
  4. Step 4: Simplify right side
    563,949.37x = 240,715,805,165.45
  5. Step 5: Solve for x
    x = 240,715,805,165.45/563,949.37
  6. Step 6: Final answer
    x = 426,839.39

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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.