Home / 538,101.04-742,579.40-311,877.76

Finding the Fourth Proportional to 538,101.04, 742,579.40 and 311,877.76

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Solution

The fourth proportional to 538,101.04, 742,579.40 and 311,877.76 is: 430,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,101.04 : 742,579.40 = 311,877.76 : x
  2. Step 2: Convert to fraction form
    538,101.04/742,579.40 = 311,877.76/x
  3. Step 3: Cross multiply
    538,101.04x = 742,579.40 × 311,877.76
  4. Step 4: Simplify right side
    538,101.04x = 231,593,999,894.14
  5. Step 5: Solve for x
    x = 231,593,999,894.14/538,101.04
  6. Step 6: Final answer
    x = 430,391.29

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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.