Home / 458,176.05-686,987.85-205,410.83

Finding the Fourth Proportional to 458,176.05, 686,987.85 and 205,410.83

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Solution

The fourth proportional to 458,176.05, 686,987.85 and 205,410.83 is: 307,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,176.05 : 686,987.85 = 205,410.83 : x
  2. Step 2: Convert to fraction form
    458,176.05/686,987.85 = 205,410.83/x
  3. Step 3: Cross multiply
    458,176.05x = 686,987.85 × 205,410.83
  4. Step 4: Simplify right side
    458,176.05x = 141,114,741,033.48
  5. Step 5: Solve for x
    x = 141,114,741,033.48/458,176.05
  6. Step 6: Final answer
    x = 307,992.40

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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.