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Finding the Fourth Proportional to 1,297,863.40, 1,946,795.10 and 849,965.80

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Solution

The fourth proportional to 1,297,863.40, 1,946,795.10 and 849,965.80 is: 1,274,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,863.40 : 1,946,795.10 = 849,965.80 : x
  2. Step 2: Convert to fraction form
    1,297,863.40/1,946,795.10 = 849,965.80/x
  3. Step 3: Cross multiply
    1,297,863.40x = 1,946,795.10 × 849,965.80
  4. Step 4: Simplify right side
    1,297,863.40x = 1,654,709,254,607.58
  5. Step 5: Solve for x
    x = 1,654,709,254,607.58/1,297,863.40
  6. Step 6: Final answer
    x = 1,274,948.70

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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.