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Finding the Fourth Proportional to 519,972.64, 779,803.98 and 220,448.41

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Solution

The fourth proportional to 519,972.64, 779,803.98 and 220,448.41 is: 330,606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,972.64 : 779,803.98 = 220,448.41 : x
  2. Step 2: Convert to fraction form
    519,972.64/779,803.98 = 220,448.41/x
  3. Step 3: Cross multiply
    519,972.64x = 779,803.98 × 220,448.41
  4. Step 4: Simplify right side
    519,972.64x = 171,906,547,502.67
  5. Step 5: Solve for x
    x = 171,906,547,502.67/519,972.64
  6. Step 6: Final answer
    x = 330,606.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.