Home / 987,111.64-1,480,025.93-388,131.22

Finding the Fourth Proportional to 987,111.64, 1,480,025.93 and 388,131.22

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Solution

The fourth proportional to 987,111.64, 1,480,025.93 and 388,131.22 is: 581,944.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,111.64 : 1,480,025.93 = 388,131.22 : x
  2. Step 2: Convert to fraction form
    987,111.64/1,480,025.93 = 388,131.22/x
  3. Step 3: Cross multiply
    987,111.64x = 1,480,025.93 × 388,131.22
  4. Step 4: Simplify right side
    987,111.64x = 574,444,267,901.88
  5. Step 5: Solve for x
    x = 574,444,267,901.88/987,111.64
  6. Step 6: Final answer
    x = 581,944.58

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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.