Home / 898,300.88-1,239,673.97-490,419.92

Finding the Fourth Proportional to 898,300.88, 1,239,673.97 and 490,419.92

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Solution

The fourth proportional to 898,300.88, 1,239,673.97 and 490,419.92 is: 676,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,300.88 : 1,239,673.97 = 490,419.92 : x
  2. Step 2: Convert to fraction form
    898,300.88/1,239,673.97 = 490,419.92/x
  3. Step 3: Cross multiply
    898,300.88x = 1,239,673.97 × 490,419.92
  4. Step 4: Simplify right side
    898,300.88x = 607,960,809,193.48
  5. Step 5: Solve for x
    x = 607,960,809,193.48/898,300.88
  6. Step 6: Final answer
    x = 676,789.73

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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.