Home / 722,140.80-1,082,336.40-322,357.20

Finding the Fourth Proportional to 722,140.80, 1,082,336.40 and 322,357.20

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Solution

The fourth proportional to 722,140.80, 1,082,336.40 and 322,357.20 is: 483,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,140.80 : 1,082,336.40 = 322,357.20 : x
  2. Step 2: Convert to fraction form
    722,140.80/1,082,336.40 = 322,357.20/x
  3. Step 3: Cross multiply
    722,140.80x = 1,082,336.40 × 322,357.20
  4. Step 4: Simplify right side
    722,140.80x = 348,898,931,362.08
  5. Step 5: Solve for x
    x = 348,898,931,362.08/722,140.80
  6. Step 6: Final answer
    x = 483,145.30

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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.