Home / 990,249.96-1,485,136.86-457,258.92

Finding the Fourth Proportional to 990,249.96, 1,485,136.86 and 457,258.92

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Solution

The fourth proportional to 990,249.96, 1,485,136.86 and 457,258.92 is: 685,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,249.96 : 1,485,136.86 = 457,258.92 : x
  2. Step 2: Convert to fraction form
    990,249.96/1,485,136.86 = 457,258.92/x
  3. Step 3: Cross multiply
    990,249.96x = 1,485,136.86 × 457,258.92
  4. Step 4: Simplify right side
    990,249.96x = 679,092,076,655.79
  5. Step 5: Solve for x
    x = 679,092,076,655.79/990,249.96
  6. Step 6: Final answer
    x = 685,778.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.