Home / 921,796.40-1,272,079.82-513,890.07

Finding the Fourth Proportional to 921,796.40, 1,272,079.82 and 513,890.07

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Solution

The fourth proportional to 921,796.40, 1,272,079.82 and 513,890.07 is: 709,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,796.40 : 1,272,079.82 = 513,890.07 : x
  2. Step 2: Convert to fraction form
    921,796.40/1,272,079.82 = 513,890.07/x
  3. Step 3: Cross multiply
    921,796.40x = 1,272,079.82 × 513,890.07
  4. Step 4: Simplify right side
    921,796.40x = 653,709,185,175.94
  5. Step 5: Solve for x
    x = 653,709,185,175.94/921,796.40
  6. Step 6: Final answer
    x = 709,168.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.