Home / 1,148,039.32-1,721,988.96-428,242

Finding the Fourth Proportional to 1,148,039.32, 1,721,988.96 and 428,242

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Solution

The fourth proportional to 1,148,039.32, 1,721,988.96 and 428,242 is: 642,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,039.32 : 1,721,988.96 = 428,242 : x
  2. Step 2: Convert to fraction form
    1,148,039.32/1,721,988.96 = 428,242/x
  3. Step 3: Cross multiply
    1,148,039.32x = 1,721,988.96 × 428,242
  4. Step 4: Simplify right side
    1,148,039.32x = 737,427,996,208.32
  5. Step 5: Solve for x
    x = 737,427,996,208.32/1,148,039.32
  6. Step 6: Final answer
    x = 642,336.88

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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.