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Finding the Fourth Proportional to 613,928.32, 847,222.56 and 355,855.12

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Solution

The fourth proportional to 613,928.32, 847,222.56 and 355,855.12 is: 491,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,928.32 : 847,222.56 = 355,855.12 : x
  2. Step 2: Convert to fraction form
    613,928.32/847,222.56 = 355,855.12/x
  3. Step 3: Cross multiply
    613,928.32x = 847,222.56 × 355,855.12
  4. Step 4: Simplify right side
    613,928.32x = 301,488,485,755.51
  5. Step 5: Solve for x
    x = 301,488,485,755.51/613,928.32
  6. Step 6: Final answer
    x = 491,080.92

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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.