Home / 917,388.40-1,376,082.60-728,431.60

Finding the Fourth Proportional to 917,388.40, 1,376,082.60 and 728,431.60

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Solution

The fourth proportional to 917,388.40, 1,376,082.60 and 728,431.60 is: 1,092,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,388.40 : 1,376,082.60 = 728,431.60 : x
  2. Step 2: Convert to fraction form
    917,388.40/1,376,082.60 = 728,431.60/x
  3. Step 3: Cross multiply
    917,388.40x = 1,376,082.60 × 728,431.60
  4. Step 4: Simplify right side
    917,388.40x = 1,002,382,050,050.16
  5. Step 5: Solve for x
    x = 1,002,382,050,050.16/917,388.40
  6. Step 6: Final answer
    x = 1,092,647.40

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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.