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Finding the Fourth Proportional to 485,556,068.60, 728,334,102.90 and 477,493,911.80

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Solution

The fourth proportional to 485,556,068.60, 728,334,102.90 and 477,493,911.80 is: 716,240,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,556,068.60 : 728,334,102.90 = 477,493,911.80 : x
  2. Step 2: Convert to fraction form
    485,556,068.60/728,334,102.90 = 477,493,911.80/x
  3. Step 3: Cross multiply
    485,556,068.60x = 728,334,102.90 × 477,493,911.80
  4. Step 4: Simplify right side
    485,556,068.60x = 347,775,099,891,064,704
  5. Step 5: Solve for x
    x = 347,775,099,891,064,704/485,556,068.60
  6. Step 6: Final answer
    x = 716,240,867.70

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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.