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Finding the Fourth Proportional to 559,564.31, 772,198.17 and 304,915.43

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Solution

The fourth proportional to 559,564.31, 772,198.17 and 304,915.43 is: 420,782.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,564.31 : 772,198.17 = 304,915.43 : x
  2. Step 2: Convert to fraction form
    559,564.31/772,198.17 = 304,915.43/x
  3. Step 3: Cross multiply
    559,564.31x = 772,198.17 × 304,915.43
  4. Step 4: Simplify right side
    559,564.31x = 235,455,137,050.76
  5. Step 5: Solve for x
    x = 235,455,137,050.76/559,564.31
  6. Step 6: Final answer
    x = 420,782.98

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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.