Home / 859,189.83-1,288,950.71-326,669.45

Finding the Fourth Proportional to 859,189.83, 1,288,950.71 and 326,669.45

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Solution

The fourth proportional to 859,189.83, 1,288,950.71 and 326,669.45 is: 490,067.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,189.83 : 1,288,950.71 = 326,669.45 : x
  2. Step 2: Convert to fraction form
    859,189.83/1,288,950.71 = 326,669.45/x
  3. Step 3: Cross multiply
    859,189.83x = 1,288,950.71 × 326,669.45
  4. Step 4: Simplify right side
    859,189.83x = 421,060,824,582.21
  5. Step 5: Solve for x
    x = 421,060,824,582.21/859,189.83
  6. Step 6: Final answer
    x = 490,067.28

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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.