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Finding the Fourth Proportional to 874,480.81, 1,312,468.90 and 342,375.51

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Solution

The fourth proportional to 874,480.81, 1,312,468.90 and 342,375.51 is: 513,856.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,480.81 : 1,312,468.90 = 342,375.51 : x
  2. Step 2: Convert to fraction form
    874,480.81/1,312,468.90 = 342,375.51/x
  3. Step 3: Cross multiply
    874,480.81x = 1,312,468.90 × 342,375.51
  4. Step 4: Simplify right side
    874,480.81x = 449,357,208,996.64
  5. Step 5: Solve for x
    x = 449,357,208,996.64/874,480.81
  6. Step 6: Final answer
    x = 513,856.00

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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.