Home / 917,414.40-1,376,121.60-728,457.60

Finding the Fourth Proportional to 917,414.40, 1,376,121.60 and 728,457.60

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Solution

The fourth proportional to 917,414.40, 1,376,121.60 and 728,457.60 is: 1,092,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,414.40 : 1,376,121.60 = 728,457.60 : x
  2. Step 2: Convert to fraction form
    917,414.40/1,376,121.60 = 728,457.60/x
  3. Step 3: Cross multiply
    917,414.40x = 1,376,121.60 × 728,457.60
  4. Step 4: Simplify right side
    917,414.40x = 1,002,446,238,044.16
  5. Step 5: Solve for x
    x = 1,002,446,238,044.16/917,414.40
  6. Step 6: Final answer
    x = 1,092,686.40

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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.