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Finding the Fourth Proportional to 874,404.40, 1,311,347.40 and 341,618.80

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Solution

The fourth proportional to 874,404.40, 1,311,347.40 and 341,618.80 is: 512,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,404.40 : 1,311,347.40 = 341,618.80 : x
  2. Step 2: Convert to fraction form
    874,404.40/1,311,347.40 = 341,618.80/x
  3. Step 3: Cross multiply
    874,404.40x = 1,311,347.40 × 341,618.80
  4. Step 4: Simplify right side
    874,404.40x = 447,980,925,171.12
  5. Step 5: Solve for x
    x = 447,980,925,171.12/874,404.40
  6. Step 6: Final answer
    x = 512,326.93

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1.5x scale

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.