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Finding the Fourth Proportional to 880,340.40, 1,214,805.60 and 498,344.40

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Solution

The fourth proportional to 880,340.40, 1,214,805.60 and 498,344.40 is: 687,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,340.40 : 1,214,805.60 = 498,344.40 : x
  2. Step 2: Convert to fraction form
    880,340.40/1,214,805.60 = 498,344.40/x
  3. Step 3: Cross multiply
    880,340.40x = 1,214,805.60 × 498,344.40
  4. Step 4: Simplify right side
    880,340.40x = 605,391,567,848.64
  5. Step 5: Solve for x
    x = 605,391,567,848.64/880,340.40
  6. Step 6: Final answer
    x = 687,678.96

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Double scale
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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.