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Finding the Fourth Proportional to 664,572.90, 996,859.35 and 310,278.90

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Solution

The fourth proportional to 664,572.90, 996,859.35 and 310,278.90 is: 465,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,572.90 : 996,859.35 = 310,278.90 : x
  2. Step 2: Convert to fraction form
    664,572.90/996,859.35 = 310,278.90/x
  3. Step 3: Cross multiply
    664,572.90x = 996,859.35 × 310,278.90
  4. Step 4: Simplify right side
    664,572.90x = 309,304,422,572.72
  5. Step 5: Solve for x
    x = 309,304,422,572.72/664,572.90
  6. Step 6: Final answer
    x = 465,418.35

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Double scale
Find fourth proportional to 664,573.90, 996,860.85 and 310,279.90
Similar ratio
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1.5x scale

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.