Home / 485,555,999.60-728,333,999.40-477,493,842.80

Finding the Fourth Proportional to 485,555,999.60, 728,333,999.40 and 477,493,842.80

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Solution

The fourth proportional to 485,555,999.60, 728,333,999.40 and 477,493,842.80 is: 716,240,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,555,999.60 : 728,333,999.40 = 477,493,842.80 : x
  2. Step 2: Convert to fraction form
    485,555,999.60/728,333,999.40 = 477,493,842.80/x
  3. Step 3: Cross multiply
    485,555,999.60x = 728,333,999.40 × 477,493,842.80
  4. Step 4: Simplify right side
    485,555,999.60x = 347,775,000,215,398,912
  5. Step 5: Solve for x
    x = 347,775,000,215,398,912/485,555,999.60
  6. Step 6: Final answer
    x = 716,240,764.20

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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.