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Finding the Fourth Proportional to 612,658.14, 845,419.24 and 340,726.56

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Solution

The fourth proportional to 612,658.14, 845,419.24 and 340,726.56 is: 470,175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,658.14 : 845,419.24 = 340,726.56 : x
  2. Step 2: Convert to fraction form
    612,658.14/845,419.24 = 340,726.56/x
  3. Step 3: Cross multiply
    612,658.14x = 845,419.24 × 340,726.56
  4. Step 4: Simplify right side
    612,658.14x = 288,056,789,403.01
  5. Step 5: Solve for x
    x = 288,056,789,403.01/612,658.14
  6. Step 6: Final answer
    x = 470,175.41

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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.