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Finding the Fourth Proportional to 626,343.40, 864,351.30 and 371,904.04

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Solution

The fourth proportional to 626,343.40, 864,351.30 and 371,904.04 is: 513,226.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,343.40 : 864,351.30 = 371,904.04 : x
  2. Step 2: Convert to fraction form
    626,343.40/864,351.30 = 371,904.04/x
  3. Step 3: Cross multiply
    626,343.40x = 864,351.30 × 371,904.04
  4. Step 4: Simplify right side
    626,343.40x = 321,455,740,449.25
  5. Step 5: Solve for x
    x = 321,455,740,449.25/626,343.40
  6. Step 6: Final answer
    x = 513,226.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.