Home / 725,130.69-1,087,322.40-325,428.81

Finding the Fourth Proportional to 725,130.69, 1,087,322.40 and 325,428.81

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Solution

The fourth proportional to 725,130.69, 1,087,322.40 and 325,428.81 is: 487,975.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,130.69 : 1,087,322.40 = 325,428.81 : x
  2. Step 2: Convert to fraction form
    725,130.69/1,087,322.40 = 325,428.81/x
  3. Step 3: Cross multiply
    725,130.69x = 1,087,322.40 × 325,428.81
  4. Step 4: Simplify right side
    725,130.69x = 353,846,034,718.34
  5. Step 5: Solve for x
    x = 353,846,034,718.34/725,130.69
  6. Step 6: Final answer
    x = 487,975.53

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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.