Home / 718,300.28-991,254.07-412,396.40

Finding the Fourth Proportional to 718,300.28, 991,254.07 and 412,396.40

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Solution

The fourth proportional to 718,300.28, 991,254.07 and 412,396.40 is: 569,106.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,300.28 : 991,254.07 = 412,396.40 : x
  2. Step 2: Convert to fraction form
    718,300.28/991,254.07 = 412,396.40/x
  3. Step 3: Cross multiply
    718,300.28x = 991,254.07 × 412,396.40
  4. Step 4: Simplify right side
    718,300.28x = 408,789,603,966.09
  5. Step 5: Solve for x
    x = 408,789,603,966.09/718,300.28
  6. Step 6: Final answer
    x = 569,106.84

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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.