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Finding the Fourth Proportional to 456,200.10, 639,729.90 and 456,200.10

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Solution

The fourth proportional to 456,200.10, 639,729.90 and 456,200.10 is: 639,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,200.10 : 639,729.90 = 456,200.10 : x
  2. Step 2: Convert to fraction form
    456,200.10/639,729.90 = 456,200.10/x
  3. Step 3: Cross multiply
    456,200.10x = 639,729.90 × 456,200.10
  4. Step 4: Simplify right side
    456,200.10x = 291,844,844,352.99
  5. Step 5: Solve for x
    x = 291,844,844,352.99/456,200.10
  6. Step 6: Final answer
    x = 639,729.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.