Home / 643,727.48-965,623.98-217,278.86

Finding the Fourth Proportional to 643,727.48, 965,623.98 and 217,278.86

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Solution

The fourth proportional to 643,727.48, 965,623.98 and 217,278.86 is: 325,929.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,727.48 : 965,623.98 = 217,278.86 : x
  2. Step 2: Convert to fraction form
    643,727.48/965,623.98 = 217,278.86/x
  3. Step 3: Cross multiply
    643,727.48x = 965,623.98 × 217,278.86
  4. Step 4: Simplify right side
    643,727.48x = 209,809,677,563.06
  5. Step 5: Solve for x
    x = 209,809,677,563.06/643,727.48
  6. Step 6: Final answer
    x = 325,929.35

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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.