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Finding the Fourth Proportional to 612,058.12, 844,586.43 and 340,108.78

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Solution

The fourth proportional to 612,058.12, 844,586.43 and 340,108.78 is: 469,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,058.12 : 844,586.43 = 340,108.78 : x
  2. Step 2: Convert to fraction form
    612,058.12/844,586.43 = 340,108.78/x
  3. Step 3: Cross multiply
    612,058.12x = 844,586.43 × 340,108.78
  4. Step 4: Simplify right side
    612,058.12x = 287,251,260,311.86
  5. Step 5: Solve for x
    x = 287,251,260,311.86/612,058.12
  6. Step 6: Final answer
    x = 469,320.23

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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.