Home / 782,615.23-1,080,035.72-438,465.67

Finding the Fourth Proportional to 782,615.23, 1,080,035.72 and 438,465.67

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Solution

The fourth proportional to 782,615.23, 1,080,035.72 and 438,465.67 is: 605,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,615.23 : 1,080,035.72 = 438,465.67 : x
  2. Step 2: Convert to fraction form
    782,615.23/1,080,035.72 = 438,465.67/x
  3. Step 3: Cross multiply
    782,615.23x = 1,080,035.72 × 438,465.67
  4. Step 4: Simplify right side
    782,615.23x = 473,558,585,593.73
  5. Step 5: Solve for x
    x = 473,558,585,593.73/782,615.23
  6. Step 6: Final answer
    x = 605,097.58

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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.