Home / 1,690,140.50-2,535,303.10-427,979.06

Finding the Fourth Proportional to 1,690,140.50, 2,535,303.10 and 427,979.06

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Solution

The fourth proportional to 1,690,140.50, 2,535,303.10 and 427,979.06 is: 641,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,140.50 : 2,535,303.10 = 427,979.06 : x
  2. Step 2: Convert to fraction form
    1,690,140.50/2,535,303.10 = 427,979.06/x
  3. Step 3: Cross multiply
    1,690,140.50x = 2,535,303.10 × 427,979.06
  4. Step 4: Simplify right side
    1,690,140.50x = 1,085,056,637,553.09
  5. Step 5: Solve for x
    x = 1,085,056,637,553.09/1,690,140.50
  6. Step 6: Final answer
    x = 641,991.97

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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.