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Finding the Fourth Proportional to 587,999.80, 879,926.10 and 409,670.20

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Solution

The fourth proportional to 587,999.80, 879,926.10 and 409,670.20 is: 613,060.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,999.80 : 879,926.10 = 409,670.20 : x
  2. Step 2: Convert to fraction form
    587,999.80/879,926.10 = 409,670.20/x
  3. Step 3: Cross multiply
    587,999.80x = 879,926.10 × 409,670.20
  4. Step 4: Simplify right side
    587,999.80x = 360,479,501,372.22
  5. Step 5: Solve for x
    x = 360,479,501,372.22/587,999.80
  6. Step 6: Final answer
    x = 613,060.59

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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.