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Finding the Fourth Proportional to 496,461.40, 744,999.90 and 259,973.80

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Solution

The fourth proportional to 496,461.40, 744,999.90 and 259,973.80 is: 390,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,461.40 : 744,999.90 = 259,973.80 : x
  2. Step 2: Convert to fraction form
    496,461.40/744,999.90 = 259,973.80/x
  3. Step 3: Cross multiply
    496,461.40x = 744,999.90 × 259,973.80
  4. Step 4: Simplify right side
    496,461.40x = 193,680,455,002.62
  5. Step 5: Solve for x
    x = 193,680,455,002.62/496,461.40
  6. Step 6: Final answer
    x = 390,121.88

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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.