Home / 881,379.60-1,322,458.20-407,821.20

Finding the Fourth Proportional to 881,379.60, 1,322,458.20 and 407,821.20

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Solution

The fourth proportional to 881,379.60, 1,322,458.20 and 407,821.20 is: 611,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,379.60 : 1,322,458.20 = 407,821.20 : x
  2. Step 2: Convert to fraction form
    881,379.60/1,322,458.20 = 407,821.20/x
  3. Step 3: Cross multiply
    881,379.60x = 1,322,458.20 × 407,821.20
  4. Step 4: Simplify right side
    881,379.60x = 539,326,490,073.84
  5. Step 5: Solve for x
    x = 539,326,490,073.84/881,379.60
  6. Step 6: Final answer
    x = 611,911.70

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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.