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Finding the Fourth Proportional to 528,501.52, 792,974.40 and 328,988.80

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Solution

The fourth proportional to 528,501.52, 792,974.40 and 328,988.80 is: 493,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,501.52 : 792,974.40 = 328,988.80 : x
  2. Step 2: Convert to fraction form
    528,501.52/792,974.40 = 328,988.80/x
  3. Step 3: Cross multiply
    528,501.52x = 792,974.40 × 328,988.80
  4. Step 4: Simplify right side
    528,501.52x = 260,879,696,286.72
  5. Step 5: Solve for x
    x = 260,879,696,286.72/528,501.52
  6. Step 6: Final answer
    x = 493,621.47

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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.