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Finding the Fourth Proportional to 521,247.60, 783,037.80 and 499,993.20

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Solution

The fourth proportional to 521,247.60, 783,037.80 and 499,993.20 is: 751,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,247.60 : 783,037.80 = 499,993.20 : x
  2. Step 2: Convert to fraction form
    521,247.60/783,037.80 = 499,993.20/x
  3. Step 3: Cross multiply
    521,247.60x = 783,037.80 × 499,993.20
  4. Step 4: Simplify right side
    521,247.60x = 391,513,575,342.96
  5. Step 5: Solve for x
    x = 391,513,575,342.96/521,247.60
  6. Step 6: Final answer
    x = 751,108.64

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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.