Home / 538,106.04-742,586.30-311,882.76

Finding the Fourth Proportional to 538,106.04, 742,586.30 and 311,882.76

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Solution

The fourth proportional to 538,106.04, 742,586.30 and 311,882.76 is: 430,398.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,106.04 : 742,586.30 = 311,882.76 : x
  2. Step 2: Convert to fraction form
    538,106.04/742,586.30 = 311,882.76/x
  3. Step 3: Cross multiply
    538,106.04x = 742,586.30 × 311,882.76
  4. Step 4: Simplify right side
    538,106.04x = 231,599,864,782.19
  5. Step 5: Solve for x
    x = 231,599,864,782.19/538,106.04
  6. Step 6: Final answer
    x = 430,398.19

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1.5x scale

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.