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Finding the Fourth Proportional to 873,785.40, 1,310,678.10 and 341,323.80

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Solution

The fourth proportional to 873,785.40, 1,310,678.10 and 341,323.80 is: 511,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,785.40 : 1,310,678.10 = 341,323.80 : x
  2. Step 2: Convert to fraction form
    873,785.40/1,310,678.10 = 341,323.80/x
  3. Step 3: Cross multiply
    873,785.40x = 1,310,678.10 × 341,323.80
  4. Step 4: Simplify right side
    873,785.40x = 447,365,629,668.78
  5. Step 5: Solve for x
    x = 447,365,629,668.78/873,785.40
  6. Step 6: Final answer
    x = 511,985.70

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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.