Home / 521,781,235.20-782,766,331.20-262,343,548.80

Finding the Fourth Proportional to 521,781,235.20, 782,766,331.20 and 262,343,548.80

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Solution

The fourth proportional to 521,781,235.20, 782,766,331.20 and 262,343,548.80 is: 393,562,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,781,235.20 : 782,766,331.20 = 262,343,548.80 : x
  2. Step 2: Convert to fraction form
    521,781,235.20/782,766,331.20 = 262,343,548.80/x
  3. Step 3: Cross multiply
    521,781,235.20x = 782,766,331.20 × 262,343,548.80
  4. Step 4: Simplify right side
    521,781,235.20x = 205,353,697,208,164,192
  5. Step 5: Solve for x
    x = 205,353,697,208,164,192/521,781,235.20
  6. Step 6: Final answer
    x = 393,562,825.48

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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.