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Finding the Fourth Proportional to 523,761.55, 722,885.12 and 308,889.07

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Solution

The fourth proportional to 523,761.55, 722,885.12 and 308,889.07 is: 426,322.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,761.55 : 722,885.12 = 308,889.07 : x
  2. Step 2: Convert to fraction form
    523,761.55/722,885.12 = 308,889.07/x
  3. Step 3: Cross multiply
    523,761.55x = 722,885.12 × 308,889.07
  4. Step 4: Simplify right side
    523,761.55x = 223,291,312,433.64
  5. Step 5: Solve for x
    x = 223,291,312,433.64/523,761.55
  6. Step 6: Final answer
    x = 426,322.46

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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.