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Finding the Fourth Proportional to 620,287.38, 930,275.55 and 453,768.66

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Solution

The fourth proportional to 620,287.38, 930,275.55 and 453,768.66 is: 680,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,287.38 : 930,275.55 = 453,768.66 : x
  2. Step 2: Convert to fraction form
    620,287.38/930,275.55 = 453,768.66/x
  3. Step 3: Cross multiply
    620,287.38x = 930,275.55 × 453,768.66
  4. Step 4: Simplify right side
    620,287.38x = 422,129,889,754.26
  5. Step 5: Solve for x
    x = 422,129,889,754.26/620,287.38
  6. Step 6: Final answer
    x = 680,539.22

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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.