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Finding the Fourth Proportional to 1,354,927.23, 1,869,664.83 and 782,151.93

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Solution

The fourth proportional to 1,354,927.23, 1,869,664.83 and 782,151.93 is: 1,079,291.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,927.23 : 1,869,664.83 = 782,151.93 : x
  2. Step 2: Convert to fraction form
    1,354,927.23/1,869,664.83 = 782,151.93/x
  3. Step 3: Cross multiply
    1,354,927.23x = 1,869,664.83 × 782,151.93
  4. Step 4: Simplify right side
    1,354,927.23x = 1,462,361,955,237.62
  5. Step 5: Solve for x
    x = 1,462,361,955,237.62/1,354,927.23
  6. Step 6: Final answer
    x = 1,079,291.88

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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.