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Finding the Fourth Proportional to 485,651,760.40, 728,477,640.60 and 330,683,564.80

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Solution

The fourth proportional to 485,651,760.40, 728,477,640.60 and 330,683,564.80 is: 496,025,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,651,760.40 : 728,477,640.60 = 330,683,564.80 : x
  2. Step 2: Convert to fraction form
    485,651,760.40/728,477,640.60 = 330,683,564.80/x
  3. Step 3: Cross multiply
    485,651,760.40x = 728,477,640.60 × 330,683,564.80
  4. Step 4: Simplify right side
    485,651,760.40x = 240,895,583,070,701,216
  5. Step 5: Solve for x
    x = 240,895,583,070,701,216/485,651,760.40
  6. Step 6: Final answer
    x = 496,025,347.20

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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.