Home / 485,526,280.80-728,289,421.20-441,310,389.60

Finding the Fourth Proportional to 485,526,280.80, 728,289,421.20 and 441,310,389.60

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Solution

The fourth proportional to 485,526,280.80, 728,289,421.20 and 441,310,389.60 is: 661,965,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,526,280.80 : 728,289,421.20 = 441,310,389.60 : x
  2. Step 2: Convert to fraction form
    485,526,280.80/728,289,421.20 = 441,310,389.60/x
  3. Step 3: Cross multiply
    485,526,280.80x = 728,289,421.20 × 441,310,389.60
  4. Step 4: Simplify right side
    485,526,280.80x = 321,401,688,211,330,560
  5. Step 5: Solve for x
    x = 321,401,688,211,330,560/485,526,280.80
  6. Step 6: Final answer
    x = 661,965,584.40

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1.5x scale

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.