Home / 784,887.60-1,177,331.40-405,807.60

Finding the Fourth Proportional to 784,887.60, 1,177,331.40 and 405,807.60

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Solution

The fourth proportional to 784,887.60, 1,177,331.40 and 405,807.60 is: 608,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,887.60 : 1,177,331.40 = 405,807.60 : x
  2. Step 2: Convert to fraction form
    784,887.60/1,177,331.40 = 405,807.60/x
  3. Step 3: Cross multiply
    784,887.60x = 1,177,331.40 × 405,807.60
  4. Step 4: Simplify right side
    784,887.60x = 477,770,029,838.64
  5. Step 5: Solve for x
    x = 477,770,029,838.64/784,887.60
  6. Step 6: Final answer
    x = 608,711.40

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Double scale
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Similar ratio
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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.