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Finding the Fourth Proportional to 485,556,065.60, 728,334,098.40 and 477,493,908.80

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Solution

The fourth proportional to 485,556,065.60, 728,334,098.40 and 477,493,908.80 is: 716,240,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,556,065.60 : 728,334,098.40 = 477,493,908.80 : x
  2. Step 2: Convert to fraction form
    485,556,065.60/728,334,098.40 = 477,493,908.80/x
  3. Step 3: Cross multiply
    485,556,065.60x = 728,334,098.40 × 477,493,908.80
  4. Step 4: Simplify right side
    485,556,065.60x = 347,775,095,557,339,840
  5. Step 5: Solve for x
    x = 347,775,095,557,339,840/485,556,065.60
  6. Step 6: Final answer
    x = 716,240,863.20

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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.