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Finding the Fourth Proportional to 468,378.60, 646,189.56 and 307,323.06

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Solution

The fourth proportional to 468,378.60, 646,189.56 and 307,323.06 is: 423,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,378.60 : 646,189.56 = 307,323.06 : x
  2. Step 2: Convert to fraction form
    468,378.60/646,189.56 = 307,323.06/x
  3. Step 3: Cross multiply
    468,378.60x = 646,189.56 × 307,323.06
  4. Step 4: Simplify right side
    468,378.60x = 198,588,952,919.25
  5. Step 5: Solve for x
    x = 198,588,952,919.25/468,378.60
  6. Step 6: Final answer
    x = 423,992.37

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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.