Home / 993,078.80-1,490,233.80-520,103.60

Finding the Fourth Proportional to 993,078.80, 1,490,233.80 and 520,103.60

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Solution

The fourth proportional to 993,078.80, 1,490,233.80 and 520,103.60 is: 780,477.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,078.80 : 1,490,233.80 = 520,103.60 : x
  2. Step 2: Convert to fraction form
    993,078.80/1,490,233.80 = 520,103.60/x
  3. Step 3: Cross multiply
    993,078.80x = 1,490,233.80 × 520,103.60
  4. Step 4: Simplify right side
    993,078.80x = 775,075,964,221.68
  5. Step 5: Solve for x
    x = 775,075,964,221.68/993,078.80
  6. Step 6: Final answer
    x = 780,477.81

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Double scale
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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.