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Finding the Fourth Proportional to 1,363,986.81, 1,881,972.63 and 880,448.40

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Solution

The fourth proportional to 1,363,986.81, 1,881,972.63 and 880,448.40 is: 1,214,806.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363,986.81 : 1,881,972.63 = 880,448.40 : x
  2. Step 2: Convert to fraction form
    1,363,986.81/1,881,972.63 = 880,448.40/x
  3. Step 3: Cross multiply
    1,363,986.81x = 1,881,972.63 × 880,448.40
  4. Step 4: Simplify right side
    1,363,986.81x = 1,656,979,790,927.29
  5. Step 5: Solve for x
    x = 1,656,979,790,927.29/1,363,986.81
  6. Step 6: Final answer
    x = 1,214,806.32

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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.