Home / 1,111,713.80-1,669,125.90-691,809.80

Finding the Fourth Proportional to 1,111,713.80, 1,669,125.90 and 691,809.80

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Solution

The fourth proportional to 1,111,713.80, 1,669,125.90 and 691,809.80 is: 1,038,682.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,713.80 : 1,669,125.90 = 691,809.80 : x
  2. Step 2: Convert to fraction form
    1,111,713.80/1,669,125.90 = 691,809.80/x
  3. Step 3: Cross multiply
    1,111,713.80x = 1,669,125.90 × 691,809.80
  4. Step 4: Simplify right side
    1,111,713.80x = 1,154,717,655,053.82
  5. Step 5: Solve for x
    x = 1,154,717,655,053.82/1,111,713.80
  6. Step 6: Final answer
    x = 1,038,682.49

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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.