Home / 1,387,011.29-1,914,060.65-766,813.82

Finding the Fourth Proportional to 1,387,011.29, 1,914,060.65 and 766,813.82

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Solution

The fourth proportional to 1,387,011.29, 1,914,060.65 and 766,813.82 is: 1,058,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,011.29 : 1,914,060.65 = 766,813.82 : x
  2. Step 2: Convert to fraction form
    1,387,011.29/1,914,060.65 = 766,813.82/x
  3. Step 3: Cross multiply
    1,387,011.29x = 1,914,060.65 × 766,813.82
  4. Step 4: Simplify right side
    1,387,011.29x = 1,467,728,145,333.81
  5. Step 5: Solve for x
    x = 1,467,728,145,333.81/1,387,011.29
  6. Step 6: Final answer
    x = 1,058,194.81

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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.