Home / 538,899.56-743,681.40-309,471.92

Finding the Fourth Proportional to 538,899.56, 743,681.40 and 309,471.92

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Solution

The fourth proportional to 538,899.56, 743,681.40 and 309,471.92 is: 427,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,899.56 : 743,681.40 = 309,471.92 : x
  2. Step 2: Convert to fraction form
    538,899.56/743,681.40 = 309,471.92/x
  3. Step 3: Cross multiply
    538,899.56x = 743,681.40 × 309,471.92
  4. Step 4: Simplify right side
    538,899.56x = 230,148,510,726.29
  5. Step 5: Solve for x
    x = 230,148,510,726.29/538,899.56
  6. Step 6: Final answer
    x = 427,071.25

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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.