Home / 766,144.65-1,148,817.89-285,977.58

Finding the Fourth Proportional to 766,144.65, 1,148,817.89 and 285,977.58

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Solution

The fourth proportional to 766,144.65, 1,148,817.89 and 285,977.58 is: 428,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,144.65 : 1,148,817.89 = 285,977.58 : x
  2. Step 2: Convert to fraction form
    766,144.65/1,148,817.89 = 285,977.58/x
  3. Step 3: Cross multiply
    766,144.65x = 1,148,817.89 × 285,977.58
  4. Step 4: Simplify right side
    766,144.65x = 328,536,160,042.91
  5. Step 5: Solve for x
    x = 328,536,160,042.91/766,144.65
  6. Step 6: Final answer
    x = 428,817.40

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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.