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Finding the Fourth Proportional to 558,992.21, 771,888.79 and 540,915.95

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Solution

The fourth proportional to 558,992.21, 771,888.79 and 540,915.95 is: 746,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,992.21 : 771,888.79 = 540,915.95 : x
  2. Step 2: Convert to fraction form
    558,992.21/771,888.79 = 540,915.95/x
  3. Step 3: Cross multiply
    558,992.21x = 771,888.79 × 540,915.95
  4. Step 4: Simplify right side
    558,992.21x = 417,526,960,743.07
  5. Step 5: Solve for x
    x = 417,526,960,743.07/558,992.21
  6. Step 6: Final answer
    x = 746,928.05

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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.