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Finding the Fourth Proportional to 790,357.16, 1,185,658.76 and 257,754

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Solution

The fourth proportional to 790,357.16, 1,185,658.76 and 257,754 is: 386,671.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,357.16 : 1,185,658.76 = 257,754 : x
  2. Step 2: Convert to fraction form
    790,357.16/1,185,658.76 = 257,754/x
  3. Step 3: Cross multiply
    790,357.16x = 1,185,658.76 × 257,754
  4. Step 4: Simplify right side
    790,357.16x = 305,608,288,025.04
  5. Step 5: Solve for x
    x = 305,608,288,025.04/790,357.16
  6. Step 6: Final answer
    x = 386,671.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.