Home / 813,973.44-1,121,989.10-641,611.92

Finding the Fourth Proportional to 813,973.44, 1,121,989.10 and 641,611.92

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Solution

The fourth proportional to 813,973.44, 1,121,989.10 and 641,611.92 is: 884,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,973.44 : 1,121,989.10 = 641,611.92 : x
  2. Step 2: Convert to fraction form
    813,973.44/1,121,989.10 = 641,611.92/x
  3. Step 3: Cross multiply
    813,973.44x = 1,121,989.10 × 641,611.92
  4. Step 4: Simplify right side
    813,973.44x = 719,881,580,670.07
  5. Step 5: Solve for x
    x = 719,881,580,670.07/813,973.44
  6. Step 6: Final answer
    x = 884,404.26

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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.