Home / 861,055.62-1,291,584.51-411,670.86

Finding the Fourth Proportional to 861,055.62, 1,291,584.51 and 411,670.86

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Solution

The fourth proportional to 861,055.62, 1,291,584.51 and 411,670.86 is: 617,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,055.62 : 1,291,584.51 = 411,670.86 : x
  2. Step 2: Convert to fraction form
    861,055.62/1,291,584.51 = 411,670.86/x
  3. Step 3: Cross multiply
    861,055.62x = 1,291,584.51 × 411,670.86
  4. Step 4: Simplify right side
    861,055.62x = 531,707,705,994.38
  5. Step 5: Solve for x
    x = 531,707,705,994.38/861,055.62
  6. Step 6: Final answer
    x = 617,506.81

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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.