Home / 1,247,670.72-1,871,310.87-406,216.80

Finding the Fourth Proportional to 1,247,670.72, 1,871,310.87 and 406,216.80

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Solution

The fourth proportional to 1,247,670.72, 1,871,310.87 and 406,216.80 is: 609,261.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,670.72 : 1,871,310.87 = 406,216.80 : x
  2. Step 2: Convert to fraction form
    1,247,670.72/1,871,310.87 = 406,216.80/x
  3. Step 3: Cross multiply
    1,247,670.72x = 1,871,310.87 × 406,216.80
  4. Step 4: Simplify right side
    1,247,670.72x = 760,157,913,416.62
  5. Step 5: Solve for x
    x = 760,157,913,416.62/1,247,670.72
  6. Step 6: Final answer
    x = 609,261.64

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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.