Home / 1,189,440.18-1,784,144.80-290,889.70

Finding the Fourth Proportional to 1,189,440.18, 1,784,144.80 and 290,889.70

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Solution

The fourth proportional to 1,189,440.18, 1,784,144.80 and 290,889.70 is: 436,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,440.18 : 1,784,144.80 = 290,889.70 : x
  2. Step 2: Convert to fraction form
    1,189,440.18/1,784,144.80 = 290,889.70/x
  3. Step 3: Cross multiply
    1,189,440.18x = 1,784,144.80 × 290,889.70
  4. Step 4: Simplify right side
    1,189,440.18x = 518,989,345,628.56
  5. Step 5: Solve for x
    x = 518,989,345,628.56/1,189,440.18
  6. Step 6: Final answer
    x = 436,330.77

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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.