Home / 1,690,138.51-2,535,300.10-427,977.07

Finding the Fourth Proportional to 1,690,138.51, 2,535,300.10 and 427,977.07

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Solution

The fourth proportional to 1,690,138.51, 2,535,300.10 and 427,977.07 is: 641,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,138.51 : 2,535,300.10 = 427,977.07 : x
  2. Step 2: Convert to fraction form
    1,690,138.51/2,535,300.10 = 427,977.07/x
  3. Step 3: Cross multiply
    1,690,138.51x = 2,535,300.10 × 427,977.07
  4. Step 4: Simplify right side
    1,690,138.51x = 1,085,050,302,565.43
  5. Step 5: Solve for x
    x = 1,085,050,302,565.43/1,690,138.51
  6. Step 6: Final answer
    x = 641,988.98

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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.