Home / 545,086.20-817,775.10-387,622.20

Finding the Fourth Proportional to 545,086.20, 817,775.10 and 387,622.20

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Solution

The fourth proportional to 545,086.20, 817,775.10 and 387,622.20 is: 581,536.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,086.20 : 817,775.10 = 387,622.20 : x
  2. Step 2: Convert to fraction form
    545,086.20/817,775.10 = 387,622.20/x
  3. Step 3: Cross multiply
    545,086.20x = 817,775.10 × 387,622.20
  4. Step 4: Simplify right side
    545,086.20x = 316,987,783,367.22
  5. Step 5: Solve for x
    x = 316,987,783,367.22/545,086.20
  6. Step 6: Final answer
    x = 581,536.98

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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.