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Finding the Fourth Proportional to 528,474.84, 728,288.51 and 518,758.22

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Solution

The fourth proportional to 528,474.84, 728,288.51 and 518,758.22 is: 714,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,474.84 : 728,288.51 = 518,758.22 : x
  2. Step 2: Convert to fraction form
    528,474.84/728,288.51 = 518,758.22/x
  3. Step 3: Cross multiply
    528,474.84x = 728,288.51 × 518,758.22
  4. Step 4: Simplify right side
    528,474.84x = 377,805,644,858.82
  5. Step 5: Solve for x
    x = 377,805,644,858.82/528,474.84
  6. Step 6: Final answer
    x = 714,898.07

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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.