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Finding the Fourth Proportional to 561,142.80, 843,787.80 and 469,904.40

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Solution

The fourth proportional to 561,142.80, 843,787.80 and 469,904.40 is: 706,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,142.80 : 843,787.80 = 469,904.40 : x
  2. Step 2: Convert to fraction form
    561,142.80/843,787.80 = 469,904.40/x
  3. Step 3: Cross multiply
    561,142.80x = 843,787.80 × 469,904.40
  4. Step 4: Simplify right side
    561,142.80x = 396,499,599,886.32
  5. Step 5: Solve for x
    x = 396,499,599,886.32/561,142.80
  6. Step 6: Final answer
    x = 706,593.05

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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.