Home / 1,128,825.17-1,693,220.57-782,288.94

Finding the Fourth Proportional to 1,128,825.17, 1,693,220.57 and 782,288.94

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Solution

The fourth proportional to 1,128,825.17, 1,693,220.57 and 782,288.94 is: 1,173,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,825.17 : 1,693,220.57 = 782,288.94 : x
  2. Step 2: Convert to fraction form
    1,128,825.17/1,693,220.57 = 782,288.94/x
  3. Step 3: Cross multiply
    1,128,825.17x = 1,693,220.57 × 782,288.94
  4. Step 4: Simplify right side
    1,128,825.17x = 1,324,587,724,891.50
  5. Step 5: Solve for x
    x = 1,324,587,724,891.50/1,128,825.17
  6. Step 6: Final answer
    x = 1,173,421.50

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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.