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Finding the Fourth Proportional to 563,861.64, 778,147.08 and 309,212.22

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Solution

The fourth proportional to 563,861.64, 778,147.08 and 309,212.22 is: 426,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,861.64 : 778,147.08 = 309,212.22 : x
  2. Step 2: Convert to fraction form
    563,861.64/778,147.08 = 309,212.22/x
  3. Step 3: Cross multiply
    563,861.64x = 778,147.08 × 309,212.22
  4. Step 4: Simplify right side
    563,861.64x = 240,612,586,093.32
  5. Step 5: Solve for x
    x = 240,612,586,093.32/563,861.64
  6. Step 6: Final answer
    x = 426,722.74

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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.