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Finding the Fourth Proportional to 1,869,871.90, 2,804,953.65 and 804,948.70

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Solution

The fourth proportional to 1,869,871.90, 2,804,953.65 and 804,948.70 is: 1,207,485.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869,871.90 : 2,804,953.65 = 804,948.70 : x
  2. Step 2: Convert to fraction form
    1,869,871.90/2,804,953.65 = 804,948.70/x
  3. Step 3: Cross multiply
    1,869,871.90x = 2,804,953.65 × 804,948.70
  4. Step 4: Simplify right side
    1,869,871.90x = 2,257,843,794,127.76
  5. Step 5: Solve for x
    x = 2,257,843,794,127.76/1,869,871.90
  6. Step 6: Final answer
    x = 1,207,485.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.