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Finding the Fourth Proportional to 880,240.40, 1,214,735.40 and 498,340.88

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Solution

The fourth proportional to 880,240.40, 1,214,735.40 and 498,340.88 is: 687,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,240.40 : 1,214,735.40 = 498,340.88 : x
  2. Step 2: Convert to fraction form
    880,240.40/1,214,735.40 = 498,340.88/x
  3. Step 3: Cross multiply
    880,240.40x = 1,214,735.40 × 498,340.88
  4. Step 4: Simplify right side
    880,240.40x = 605,352,308,203.15
  5. Step 5: Solve for x
    x = 605,352,308,203.15/880,240.40
  6. Step 6: Final answer
    x = 687,712.48

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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.