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Finding the Fourth Proportional to 404,718.80, 607,078.20 and 298,430.60

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Solution

The fourth proportional to 404,718.80, 607,078.20 and 298,430.60 is: 447,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,718.80 : 607,078.20 = 298,430.60 : x
  2. Step 2: Convert to fraction form
    404,718.80/607,078.20 = 298,430.60/x
  3. Step 3: Cross multiply
    404,718.80x = 607,078.20 × 298,430.60
  4. Step 4: Simplify right side
    404,718.80x = 181,170,711,472.92
  5. Step 5: Solve for x
    x = 181,170,711,472.92/404,718.80
  6. Step 6: Final answer
    x = 447,645.90

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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.