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Finding the Fourth Proportional to 580,445.21, 800,987.45 and 322,338.53

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Solution

The fourth proportional to 580,445.21, 800,987.45 and 322,338.53 is: 444,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,445.21 : 800,987.45 = 322,338.53 : x
  2. Step 2: Convert to fraction form
    580,445.21/800,987.45 = 322,338.53/x
  3. Step 3: Cross multiply
    580,445.21x = 800,987.45 × 322,338.53
  4. Step 4: Simplify right side
    580,445.21x = 258,189,117,572.22
  5. Step 5: Solve for x
    x = 258,189,117,572.22/580,445.21
  6. Step 6: Final answer
    x = 444,812.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.