Home / 664,278.20-996,417.30-221,046.20

Finding the Fourth Proportional to 664,278.20, 996,417.30 and 221,046.20

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Solution

The fourth proportional to 664,278.20, 996,417.30 and 221,046.20 is: 331,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,278.20 : 996,417.30 = 221,046.20 : x
  2. Step 2: Convert to fraction form
    664,278.20/996,417.30 = 221,046.20/x
  3. Step 3: Cross multiply
    664,278.20x = 996,417.30 × 221,046.20
  4. Step 4: Simplify right side
    664,278.20x = 220,254,257,779.26
  5. Step 5: Solve for x
    x = 220,254,257,779.26/664,278.20
  6. Step 6: Final answer
    x = 331,569.30

Related Problems

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Half scale
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Double scale
Find fourth proportional to 664,279.20, 996,418.80 and 221,047.20
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.