Home / 643,890.48-965,856.06-306,967.92

Finding the Fourth Proportional to 643,890.48, 965,856.06 and 306,967.92

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Solution

The fourth proportional to 643,890.48, 965,856.06 and 306,967.92 is: 460,461.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,890.48 : 965,856.06 = 306,967.92 : x
  2. Step 2: Convert to fraction form
    643,890.48/965,856.06 = 306,967.92/x
  3. Step 3: Cross multiply
    643,890.48x = 965,856.06 × 306,967.92
  4. Step 4: Simplify right side
    643,890.48x = 296,486,825,757.60
  5. Step 5: Solve for x
    x = 296,486,825,757.60/643,890.48
  6. Step 6: Final answer
    x = 460,461.58

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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.