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Finding the Fourth Proportional to 611,059.80, 843,271.62 and 339,145.22

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Solution

The fourth proportional to 611,059.80, 843,271.62 and 339,145.22 is: 468,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,059.80 : 843,271.62 = 339,145.22 : x
  2. Step 2: Convert to fraction form
    611,059.80/843,271.62 = 339,145.22/x
  3. Step 3: Cross multiply
    611,059.80x = 843,271.62 × 339,145.22
  4. Step 4: Simplify right side
    611,059.80x = 285,991,539,084.66
  5. Step 5: Solve for x
    x = 285,991,539,084.66/611,059.80
  6. Step 6: Final answer
    x = 468,025.45

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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.