Home / 456,427.20-684,640.80-207,109.20

Finding the Fourth Proportional to 456,427.20, 684,640.80 and 207,109.20

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Solution

The fourth proportional to 456,427.20, 684,640.80 and 207,109.20 is: 310,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,427.20 : 684,640.80 = 207,109.20 : x
  2. Step 2: Convert to fraction form
    456,427.20/684,640.80 = 207,109.20/x
  3. Step 3: Cross multiply
    456,427.20x = 684,640.80 × 207,109.20
  4. Step 4: Simplify right side
    456,427.20x = 141,795,408,375.36
  5. Step 5: Solve for x
    x = 141,795,408,375.36/456,427.20
  6. Step 6: Final answer
    x = 310,663.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.