Home / 1,231,026.72-1,698,902.28-687,269.40

Finding the Fourth Proportional to 1,231,026.72, 1,698,902.28 and 687,269.40

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Solution

The fourth proportional to 1,231,026.72, 1,698,902.28 and 687,269.40 is: 948,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,026.72 : 1,698,902.28 = 687,269.40 : x
  2. Step 2: Convert to fraction form
    1,231,026.72/1,698,902.28 = 687,269.40/x
  3. Step 3: Cross multiply
    1,231,026.72x = 1,698,902.28 × 687,269.40
  4. Step 4: Simplify right side
    1,231,026.72x = 1,167,603,550,634.23
  5. Step 5: Solve for x
    x = 1,167,603,550,634.23/1,231,026.72
  6. Step 6: Final answer
    x = 948,479.45

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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.