Home / 1,159,940.76-1,600,735.67-643,728.10

Finding the Fourth Proportional to 1,159,940.76, 1,600,735.67 and 643,728.10

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Solution

The fourth proportional to 1,159,940.76, 1,600,735.67 and 643,728.10 is: 888,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,940.76 : 1,600,735.67 = 643,728.10 : x
  2. Step 2: Convert to fraction form
    1,159,940.76/1,600,735.67 = 643,728.10/x
  3. Step 3: Cross multiply
    1,159,940.76x = 1,600,735.67 × 643,728.10
  4. Step 4: Simplify right side
    1,159,940.76x = 1,030,438,531,451.33
  5. Step 5: Solve for x
    x = 1,030,438,531,451.33/1,159,940.76
  6. Step 6: Final answer
    x = 888,354.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.