Home / 1,389,688.12-2,080,475.70-855,606.52

Finding the Fourth Proportional to 1,389,688.12, 2,080,475.70 and 855,606.52

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Solution

The fourth proportional to 1,389,688.12, 2,080,475.70 and 855,606.52 is: 1,280,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,688.12 : 2,080,475.70 = 855,606.52 : x
  2. Step 2: Convert to fraction form
    1,389,688.12/2,080,475.70 = 855,606.52/x
  3. Step 3: Cross multiply
    1,389,688.12x = 2,080,475.70 × 855,606.52
  4. Step 4: Simplify right side
    1,389,688.12x = 1,780,068,573,621.56
  5. Step 5: Solve for x
    x = 1,780,068,573,621.56/1,389,688.12
  6. Step 6: Final answer
    x = 1,280,912.28

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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.