Home / 1,160,215.79-1,601,073.65-643,939.40

Finding the Fourth Proportional to 1,160,215.79, 1,601,073.65 and 643,939.40

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Solution

The fourth proportional to 1,160,215.79, 1,601,073.65 and 643,939.40 is: 888,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,215.79 : 1,601,073.65 = 643,939.40 : x
  2. Step 2: Convert to fraction form
    1,160,215.79/1,601,073.65 = 643,939.40/x
  3. Step 3: Cross multiply
    1,160,215.79x = 1,601,073.65 × 643,939.40
  4. Step 4: Simplify right side
    1,160,215.79x = 1,030,994,399,141.29
  5. Step 5: Solve for x
    x = 1,030,994,399,141.29/1,160,215.79
  6. Step 6: Final answer
    x = 888,622.97

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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.