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Finding the Fourth Proportional to 643,887.48, 965,851.56 and 306,964.92

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Solution

The fourth proportional to 643,887.48, 965,851.56 and 306,964.92 is: 460,457.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,887.48 : 965,851.56 = 306,964.92 : x
  2. Step 2: Convert to fraction form
    643,887.48/965,851.56 = 306,964.92/x
  3. Step 3: Cross multiply
    643,887.48x = 965,851.56 × 306,964.92
  4. Step 4: Simplify right side
    643,887.48x = 296,482,546,847.28
  5. Step 5: Solve for x
    x = 296,482,546,847.28/643,887.48
  6. Step 6: Final answer
    x = 460,457.08

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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.