Home / 810,828.28-1,118,974.53-538,426.45

Finding the Fourth Proportional to 810,828.28, 1,118,974.53 and 538,426.45

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Solution

The fourth proportional to 810,828.28, 1,118,974.53 and 538,426.45 is: 743,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,828.28 : 1,118,974.53 = 538,426.45 : x
  2. Step 2: Convert to fraction form
    810,828.28/1,118,974.53 = 538,426.45/x
  3. Step 3: Cross multiply
    810,828.28x = 1,118,974.53 × 538,426.45
  4. Step 4: Simplify right side
    810,828.28x = 602,485,483,828.32
  5. Step 5: Solve for x
    x = 602,485,483,828.32/810,828.28
  6. Step 6: Final answer
    x = 743,049.42

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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.