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Finding the Fourth Proportional to 626,465.56, 864,670.80 and 371,963.56

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Solution

The fourth proportional to 626,465.56, 864,670.80 and 371,963.56 is: 513,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,465.56 : 864,670.80 = 371,963.56 : x
  2. Step 2: Convert to fraction form
    626,465.56/864,670.80 = 371,963.56/x
  3. Step 3: Cross multiply
    626,465.56x = 864,670.80 × 371,963.56
  4. Step 4: Simplify right side
    626,465.56x = 321,626,028,996.05
  5. Step 5: Solve for x
    x = 321,626,028,996.05/626,465.56
  6. Step 6: Final answer
    x = 513,397.78

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1.5x scale

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.