Home / 1,152,355.14-1,590,251.40-643,057.38

Finding the Fourth Proportional to 1,152,355.14, 1,590,251.40 and 643,057.38

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Solution

The fourth proportional to 1,152,355.14, 1,590,251.40 and 643,057.38 is: 887,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,355.14 : 1,590,251.40 = 643,057.38 : x
  2. Step 2: Convert to fraction form
    1,152,355.14/1,590,251.40 = 643,057.38/x
  3. Step 3: Cross multiply
    1,152,355.14x = 1,590,251.40 × 643,057.38
  4. Step 4: Simplify right side
    1,152,355.14x = 1,022,622,898,825.33
  5. Step 5: Solve for x
    x = 1,022,622,898,825.33/1,152,355.14
  6. Step 6: Final answer
    x = 887,419.91

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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.