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Finding the Fourth Proportional to 528,387.84, 729,158.76 and 298,927.80

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Solution

The fourth proportional to 528,387.84, 729,158.76 and 298,927.80 is: 412,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,387.84 : 729,158.76 = 298,927.80 : x
  2. Step 2: Convert to fraction form
    528,387.84/729,158.76 = 298,927.80/x
  3. Step 3: Cross multiply
    528,387.84x = 729,158.76 × 298,927.80
  4. Step 4: Simplify right side
    528,387.84x = 217,965,823,977.53
  5. Step 5: Solve for x
    x = 217,965,823,977.53/528,387.84
  6. Step 6: Final answer
    x = 412,511.05

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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.