Home / 811,095.17-1,216,998.41-384,938.78

Finding the Fourth Proportional to 811,095.17, 1,216,998.41 and 384,938.78

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Solution

The fourth proportional to 811,095.17, 1,216,998.41 and 384,938.78 is: 577,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,095.17 : 1,216,998.41 = 384,938.78 : x
  2. Step 2: Convert to fraction form
    811,095.17/1,216,998.41 = 384,938.78/x
  3. Step 3: Cross multiply
    811,095.17x = 1,216,998.41 × 384,938.78
  4. Step 4: Simplify right side
    811,095.17x = 468,469,875,197.65
  5. Step 5: Solve for x
    x = 468,469,875,197.65/811,095.17
  6. Step 6: Final answer
    x = 577,576.95

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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.