Home / 916,773.40-1,375,156.86-285,687.64

Finding the Fourth Proportional to 916,773.40, 1,375,156.86 and 285,687.64

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Solution

The fourth proportional to 916,773.40, 1,375,156.86 and 285,687.64 is: 428,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,773.40 : 1,375,156.86 = 285,687.64 : x
  2. Step 2: Convert to fraction form
    916,773.40/1,375,156.86 = 285,687.64/x
  3. Step 3: Cross multiply
    916,773.40x = 1,375,156.86 × 285,687.64
  4. Step 4: Simplify right side
    916,773.40x = 392,865,317,963.21
  5. Step 5: Solve for x
    x = 392,865,317,963.21/916,773.40
  6. Step 6: Final answer
    x = 428,530.45

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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.