Home / 899,197.72-1,240,878.18-491,290.78

Finding the Fourth Proportional to 899,197.72, 1,240,878.18 and 491,290.78

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Solution

The fourth proportional to 899,197.72, 1,240,878.18 and 491,290.78 is: 677,973.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,197.72 : 1,240,878.18 = 491,290.78 : x
  2. Step 2: Convert to fraction form
    899,197.72/1,240,878.18 = 491,290.78/x
  3. Step 3: Cross multiply
    899,197.72x = 1,240,878.18 × 491,290.78
  4. Step 4: Simplify right side
    899,197.72x = 609,632,008,937.18
  5. Step 5: Solve for x
    x = 609,632,008,937.18/899,197.72
  6. Step 6: Final answer
    x = 677,973.26

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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.