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Finding the Fourth Proportional to 497,900.88, 687,100.08 and 283,040.94

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Solution

The fourth proportional to 497,900.88, 687,100.08 and 283,040.94 is: 390,594.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,900.88 : 687,100.08 = 283,040.94 : x
  2. Step 2: Convert to fraction form
    497,900.88/687,100.08 = 283,040.94/x
  3. Step 3: Cross multiply
    497,900.88x = 687,100.08 × 283,040.94
  4. Step 4: Simplify right side
    497,900.88x = 194,477,452,517.28
  5. Step 5: Solve for x
    x = 194,477,452,517.28/497,900.88
  6. Step 6: Final answer
    x = 390,594.72

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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.