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Finding the Fourth Proportional to 612,769, 845,621.22 and 344,498.92

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Solution

The fourth proportional to 612,769, 845,621.22 and 344,498.92 is: 475,408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,769 : 845,621.22 = 344,498.92 : x
  2. Step 2: Convert to fraction form
    612,769/845,621.22 = 344,498.92/x
  3. Step 3: Cross multiply
    612,769x = 845,621.22 × 344,498.92
  4. Step 4: Simplify right side
    612,769x = 291,315,597,019.08
  5. Step 5: Solve for x
    x = 291,315,597,019.08/612,769
  6. Step 6: Final answer
    x = 475,408.51

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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.