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Finding the Fourth Proportional to 526,538.02, 726,391.65 and 308,636.22

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Solution

The fourth proportional to 526,538.02, 726,391.65 and 308,636.22 is: 425,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,538.02 : 726,391.65 = 308,636.22 : x
  2. Step 2: Convert to fraction form
    526,538.02/726,391.65 = 308,636.22/x
  3. Step 3: Cross multiply
    526,538.02x = 726,391.65 × 308,636.22
  4. Step 4: Simplify right side
    526,538.02x = 224,190,775,240.84
  5. Step 5: Solve for x
    x = 224,190,775,240.84/526,538.02
  6. Step 6: Final answer
    x = 425,782.69

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1.5x scale

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.