Home / 1,278,407.51-1,764,191.27-697,642.13

Finding the Fourth Proportional to 1,278,407.51, 1,764,191.27 and 697,642.13

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Solution

The fourth proportional to 1,278,407.51, 1,764,191.27 and 697,642.13 is: 962,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,407.51 : 1,764,191.27 = 697,642.13 : x
  2. Step 2: Convert to fraction form
    1,278,407.51/1,764,191.27 = 697,642.13/x
  3. Step 3: Cross multiply
    1,278,407.51x = 1,764,191.27 × 697,642.13
  4. Step 4: Simplify right side
    1,278,407.51x = 1,230,774,143,021.04
  5. Step 5: Solve for x
    x = 1,230,774,143,021.04/1,278,407.51
  6. Step 6: Final answer
    x = 962,740.08

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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.