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Finding the Fourth Proportional to 528,882.24, 729,784 and 311,100.76

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Solution

The fourth proportional to 528,882.24, 729,784 and 311,100.76 is: 429,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,882.24 : 729,784 = 311,100.76 : x
  2. Step 2: Convert to fraction form
    528,882.24/729,784 = 311,100.76/x
  3. Step 3: Cross multiply
    528,882.24x = 729,784 × 311,100.76
  4. Step 4: Simplify right side
    528,882.24x = 227,036,357,035.84
  5. Step 5: Solve for x
    x = 227,036,357,035.84/528,882.24
  6. Step 6: Final answer
    x = 429,275.82

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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.