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Finding the Fourth Proportional to 613,295.32, 845,988.81 and 398,578.39

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Solution

The fourth proportional to 613,295.32, 845,988.81 and 398,578.39 is: 549,805.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,295.32 : 845,988.81 = 398,578.39 : x
  2. Step 2: Convert to fraction form
    613,295.32/845,988.81 = 398,578.39/x
  3. Step 3: Cross multiply
    613,295.32x = 845,988.81 × 398,578.39
  4. Step 4: Simplify right side
    613,295.32x = 337,192,857,847.82
  5. Step 5: Solve for x
    x = 337,192,857,847.82/613,295.32
  6. Step 6: Final answer
    x = 549,805.04

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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.