Home / 1,389,301.20-2,082,785.40-724,453.20

Finding the Fourth Proportional to 1,389,301.20, 2,082,785.40 and 724,453.20

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Solution

The fourth proportional to 1,389,301.20, 2,082,785.40 and 724,453.20 is: 1,086,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,301.20 : 2,082,785.40 = 724,453.20 : x
  2. Step 2: Convert to fraction form
    1,389,301.20/2,082,785.40 = 724,453.20/x
  3. Step 3: Cross multiply
    1,389,301.20x = 2,082,785.40 × 724,453.20
  4. Step 4: Simplify right side
    1,389,301.20x = 1,508,880,547,943.28
  5. Step 5: Solve for x
    x = 1,508,880,547,943.28/1,389,301.20
  6. Step 6: Final answer
    x = 1,086,071.58

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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.