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Finding the Fourth Proportional to 1,402,367.51, 1,934,945.84 and 885,500.12

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Solution

The fourth proportional to 1,402,367.51, 1,934,945.84 and 885,500.12 is: 1,221,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402,367.51 : 1,934,945.84 = 885,500.12 : x
  2. Step 2: Convert to fraction form
    1,402,367.51/1,934,945.84 = 885,500.12/x
  3. Step 3: Cross multiply
    1,402,367.51x = 1,934,945.84 × 885,500.12
  4. Step 4: Simplify right side
    1,402,367.51x = 1,713,394,759,411.27
  5. Step 5: Solve for x
    x = 1,713,394,759,411.27/1,402,367.51
  6. Step 6: Final answer
    x = 1,221,787.27

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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.