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Finding the Fourth Proportional to 609,047.28, 840,727.08 and 412,858.80

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Solution

The fourth proportional to 609,047.28, 840,727.08 and 412,858.80 is: 569,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,047.28 : 840,727.08 = 412,858.80 : x
  2. Step 2: Convert to fraction form
    609,047.28/840,727.08 = 412,858.80/x
  3. Step 3: Cross multiply
    609,047.28x = 840,727.08 × 412,858.80
  4. Step 4: Simplify right side
    609,047.28x = 347,101,573,376.30
  5. Step 5: Solve for x
    x = 347,101,573,376.30/609,047.28
  6. Step 6: Final answer
    x = 569,909.08

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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.