Home / 563,941.87-778,288.98-309,342.25

Finding the Fourth Proportional to 563,941.87, 778,288.98 and 309,342.25

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Solution

The fourth proportional to 563,941.87, 778,288.98 and 309,342.25 is: 426,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,941.87 : 778,288.98 = 309,342.25 : x
  2. Step 2: Convert to fraction form
    563,941.87/778,288.98 = 309,342.25/x
  3. Step 3: Cross multiply
    563,941.87x = 778,288.98 × 309,342.25
  4. Step 4: Simplify right side
    563,941.87x = 240,757,664,223.41
  5. Step 5: Solve for x
    x = 240,757,664,223.41/563,941.87
  6. Step 6: Final answer
    x = 426,919.29

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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.