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Finding the Fourth Proportional to 528,034.80, 791,533.80 and 261,836.40

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Solution

The fourth proportional to 528,034.80, 791,533.80 and 261,836.40 is: 392,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,034.80 : 791,533.80 = 261,836.40 : x
  2. Step 2: Convert to fraction form
    528,034.80/791,533.80 = 261,836.40/x
  3. Step 3: Cross multiply
    528,034.80x = 791,533.80 × 261,836.40
  4. Step 4: Simplify right side
    528,034.80x = 207,252,360,670.32
  5. Step 5: Solve for x
    x = 207,252,360,670.32/528,034.80
  6. Step 6: Final answer
    x = 392,497.54

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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.