Home / 1,389,108.20-2,082,495.90-724,260.20

Finding the Fourth Proportional to 1,389,108.20, 2,082,495.90 and 724,260.20

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Solution

The fourth proportional to 1,389,108.20, 2,082,495.90 and 724,260.20 is: 1,085,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,108.20 : 2,082,495.90 = 724,260.20 : x
  2. Step 2: Convert to fraction form
    1,389,108.20/2,082,495.90 = 724,260.20/x
  3. Step 3: Cross multiply
    1,389,108.20x = 2,082,495.90 × 724,260.20
  4. Step 4: Simplify right side
    1,389,108.20x = 1,508,268,897,033.18
  5. Step 5: Solve for x
    x = 1,508,268,897,033.18/1,389,108.20
  6. Step 6: Final answer
    x = 1,085,782.16

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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.