Home / 490,200.24-676,397.04-306,417.30

Finding the Fourth Proportional to 490,200.24, 676,397.04 and 306,417.30

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Solution

The fourth proportional to 490,200.24, 676,397.04 and 306,417.30 is: 422,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,200.24 : 676,397.04 = 306,417.30 : x
  2. Step 2: Convert to fraction form
    490,200.24/676,397.04 = 306,417.30/x
  3. Step 3: Cross multiply
    490,200.24x = 676,397.04 × 306,417.30
  4. Step 4: Simplify right side
    490,200.24x = 207,259,754,724.79
  5. Step 5: Solve for x
    x = 207,259,754,724.79/490,200.24
  6. Step 6: Final answer
    x = 422,806.31

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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.