Home / 661,090,288.20-990,441,038.70-565,538,800.20

Finding the Fourth Proportional to 661,090,288.20, 990,441,038.70 and 565,538,800.20

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Solution

The fourth proportional to 661,090,288.20, 990,441,038.70 and 565,538,800.20 is: 847,286,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,090,288.20 : 990,441,038.70 = 565,538,800.20 : x
  2. Step 2: Convert to fraction form
    661,090,288.20/990,441,038.70 = 565,538,800.20/x
  3. Step 3: Cross multiply
    661,090,288.20x = 990,441,038.70 × 565,538,800.20
  4. Step 4: Simplify right side
    661,090,288.20x = 560,132,836,695,239,872
  5. Step 5: Solve for x
    x = 560,132,836,695,239,872/661,090,288.20
  6. Step 6: Final answer
    x = 847,286,439.83

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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.