Home / 766,858.20-1,150,805.70-429,898.20

Finding the Fourth Proportional to 766,858.20, 1,150,805.70 and 429,898.20

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Solution

The fourth proportional to 766,858.20, 1,150,805.70 and 429,898.20 is: 645,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,858.20 : 1,150,805.70 = 429,898.20 : x
  2. Step 2: Convert to fraction form
    766,858.20/1,150,805.70 = 429,898.20/x
  3. Step 3: Cross multiply
    766,858.20x = 1,150,805.70 × 429,898.20
  4. Step 4: Simplify right side
    766,858.20x = 494,729,298,979.74
  5. Step 5: Solve for x
    x = 494,729,298,979.74/766,858.20
  6. Step 6: Final answer
    x = 645,137.91

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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.