Home / 1,231,038.81-1,698,838.11-687,164.85

Finding the Fourth Proportional to 1,231,038.81, 1,698,838.11 and 687,164.85

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Solution

The fourth proportional to 1,231,038.81, 1,698,838.11 and 687,164.85 is: 948,290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,038.81 : 1,698,838.11 = 687,164.85 : x
  2. Step 2: Convert to fraction form
    1,231,038.81/1,698,838.11 = 687,164.85/x
  3. Step 3: Cross multiply
    1,231,038.81x = 1,698,838.11 × 687,164.85
  4. Step 4: Simplify right side
    1,231,038.81x = 1,167,381,835,032.43
  5. Step 5: Solve for x
    x = 1,167,381,835,032.43/1,231,038.81
  6. Step 6: Final answer
    x = 948,290.03

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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.