Home / 718,152.21-991,139.76-412,324.36

Finding the Fourth Proportional to 718,152.21, 991,139.76 and 412,324.36

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Solution

The fourth proportional to 718,152.21, 991,139.76 and 412,324.36 is: 569,059.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,152.21 : 991,139.76 = 412,324.36 : x
  2. Step 2: Convert to fraction form
    718,152.21/991,139.76 = 412,324.36/x
  3. Step 3: Cross multiply
    718,152.21x = 991,139.76 × 412,324.36
  4. Step 4: Simplify right side
    718,152.21x = 408,671,064,734.70
  5. Step 5: Solve for x
    x = 408,671,064,734.70/718,152.21
  6. Step 6: Final answer
    x = 569,059.12

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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.