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Finding the Fourth Proportional to 528,032.80, 791,530.80 and 261,834.40

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Solution

The fourth proportional to 528,032.80, 791,530.80 and 261,834.40 is: 392,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,032.80 : 791,530.80 = 261,834.40 : x
  2. Step 2: Convert to fraction form
    528,032.80/791,530.80 = 261,834.40/x
  3. Step 3: Cross multiply
    528,032.80x = 791,530.80 × 261,834.40
  4. Step 4: Simplify right side
    528,032.80x = 207,249,992,099.52
  5. Step 5: Solve for x
    x = 207,249,992,099.52/528,032.80
  6. Step 6: Final answer
    x = 392,494.54

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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.