Home / 521,111.28-718,562.48-339,486.40

Finding the Fourth Proportional to 521,111.28, 718,562.48 and 339,486.40

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Solution

The fourth proportional to 521,111.28, 718,562.48 and 339,486.40 is: 468,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,111.28 : 718,562.48 = 339,486.40 : x
  2. Step 2: Convert to fraction form
    521,111.28/718,562.48 = 339,486.40/x
  3. Step 3: Cross multiply
    521,111.28x = 718,562.48 × 339,486.40
  4. Step 4: Simplify right side
    521,111.28x = 243,942,189,510.27
  5. Step 5: Solve for x
    x = 243,942,189,510.27/521,111.28
  6. Step 6: Final answer
    x = 468,119.19

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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.