Home / 1,151,909.20-1,728,068.80-393,834.88

Finding the Fourth Proportional to 1,151,909.20, 1,728,068.80 and 393,834.88

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Solution

The fourth proportional to 1,151,909.20, 1,728,068.80 and 393,834.88 is: 590,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,909.20 : 1,728,068.80 = 393,834.88 : x
  2. Step 2: Convert to fraction form
    1,151,909.20/1,728,068.80 = 393,834.88/x
  3. Step 3: Cross multiply
    1,151,909.20x = 1,728,068.80 × 393,834.88
  4. Step 4: Simplify right side
    1,151,909.20x = 680,573,768,479.74
  5. Step 5: Solve for x
    x = 680,573,768,479.74/1,151,909.20
  6. Step 6: Final answer
    x = 590,822.41

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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.