Home / 782,871.88-1,080,367.32-438,708.64

Finding the Fourth Proportional to 782,871.88, 1,080,367.32 and 438,708.64

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Solution

The fourth proportional to 782,871.88, 1,080,367.32 and 438,708.64 is: 605,420.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,871.88 : 1,080,367.32 = 438,708.64 : x
  2. Step 2: Convert to fraction form
    782,871.88/1,080,367.32 = 438,708.64/x
  3. Step 3: Cross multiply
    782,871.88x = 1,080,367.32 × 438,708.64
  4. Step 4: Simplify right side
    782,871.88x = 473,966,477,657.65
  5. Step 5: Solve for x
    x = 473,966,477,657.65/782,871.88
  6. Step 6: Final answer
    x = 605,420.24

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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.