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Finding the Fourth Proportional to 613,382.52, 920,903.46 and 423,370.47

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Solution

The fourth proportional to 613,382.52, 920,903.46 and 423,370.47 is: 635,628.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,382.52 : 920,903.46 = 423,370.47 : x
  2. Step 2: Convert to fraction form
    613,382.52/920,903.46 = 423,370.47/x
  3. Step 3: Cross multiply
    613,382.52x = 920,903.46 × 423,370.47
  4. Step 4: Simplify right side
    613,382.52x = 389,883,330,684.83
  5. Step 5: Solve for x
    x = 389,883,330,684.83/613,382.52
  6. Step 6: Final answer
    x = 635,628.37

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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.