Home / 1,428,179.90-1,970,888.10-816,345.74

Finding the Fourth Proportional to 1,428,179.90, 1,970,888.10 and 816,345.74

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Solution

The fourth proportional to 1,428,179.90, 1,970,888.10 and 816,345.74 is: 1,126,557.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,179.90 : 1,970,888.10 = 816,345.74 : x
  2. Step 2: Convert to fraction form
    1,428,179.90/1,970,888.10 = 816,345.74/x
  3. Step 3: Cross multiply
    1,428,179.90x = 1,970,888.10 × 816,345.74
  4. Step 4: Simplify right side
    1,428,179.90x = 1,608,926,104,451.69
  5. Step 5: Solve for x
    x = 1,608,926,104,451.69/1,428,179.90
  6. Step 6: Final answer
    x = 1,126,557.03

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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.