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Finding the Fourth Proportional to 478,621.84, 660,511.98 and 263,775.75

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Solution

The fourth proportional to 478,621.84, 660,511.98 and 263,775.75 is: 364,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,621.84 : 660,511.98 = 263,775.75 : x
  2. Step 2: Convert to fraction form
    478,621.84/660,511.98 = 263,775.75/x
  3. Step 3: Cross multiply
    478,621.84x = 660,511.98 × 263,775.75
  4. Step 4: Simplify right side
    478,621.84x = 174,227,042,908.49
  5. Step 5: Solve for x
    x = 174,227,042,908.49/478,621.84
  6. Step 6: Final answer
    x = 364,018.16

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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.