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Finding the Fourth Proportional to 613,411.20, 846,486.72 and 345,087.36

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Solution

The fourth proportional to 613,411.20, 846,486.72 and 345,087.36 is: 476,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,411.20 : 846,486.72 = 345,087.36 : x
  2. Step 2: Convert to fraction form
    613,411.20/846,486.72 = 345,087.36/x
  3. Step 3: Cross multiply
    613,411.20x = 846,486.72 × 345,087.36
  4. Step 4: Simplify right side
    613,411.20x = 292,111,867,479.86
  5. Step 5: Solve for x
    x = 292,111,867,479.86/613,411.20
  6. Step 6: Final answer
    x = 476,208.89

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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.