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Finding the Fourth Proportional to 611,440.25, 843,787.55 and 343,168.25

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Solution

The fourth proportional to 611,440.25, 843,787.55 and 343,168.25 is: 473,572.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,440.25 : 843,787.55 = 343,168.25 : x
  2. Step 2: Convert to fraction form
    611,440.25/843,787.55 = 343,168.25/x
  3. Step 3: Cross multiply
    611,440.25x = 843,787.55 × 343,168.25
  4. Step 4: Simplify right side
    611,440.25x = 289,561,095,189.45
  5. Step 5: Solve for x
    x = 289,561,095,189.45/611,440.25
  6. Step 6: Final answer
    x = 473,572.19

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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.