Home / 430,684.68-647,078.22-406,812.36

Finding the Fourth Proportional to 430,684.68, 647,078.22 and 406,812.36

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Solution

The fourth proportional to 430,684.68, 647,078.22 and 406,812.36 is: 611,211.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,684.68 : 647,078.22 = 406,812.36 : x
  2. Step 2: Convert to fraction form
    430,684.68/647,078.22 = 406,812.36/x
  3. Step 3: Cross multiply
    430,684.68x = 647,078.22 × 406,812.36
  4. Step 4: Simplify right side
    430,684.68x = 263,239,417,782.80
  5. Step 5: Solve for x
    x = 263,239,417,782.80/430,684.68
  6. Step 6: Final answer
    x = 611,211.47

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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.