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Finding the Fourth Proportional to 693,015.60, 1,039,674.60 and 393,639.60

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Solution

The fourth proportional to 693,015.60, 1,039,674.60 and 393,639.60 is: 590,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,015.60 : 1,039,674.60 = 393,639.60 : x
  2. Step 2: Convert to fraction form
    693,015.60/1,039,674.60 = 393,639.60/x
  3. Step 3: Cross multiply
    693,015.60x = 1,039,674.60 × 393,639.60
  4. Step 4: Simplify right side
    693,015.60x = 409,257,093,674.16
  5. Step 5: Solve for x
    x = 409,257,093,674.16/693,015.60
  6. Step 6: Final answer
    x = 590,545.28

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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.