Home / 1,640,443.40-2,460,665.10-643,171.40

Finding the Fourth Proportional to 1,640,443.40, 2,460,665.10 and 643,171.40

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Solution

The fourth proportional to 1,640,443.40, 2,460,665.10 and 643,171.40 is: 964,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,443.40 : 2,460,665.10 = 643,171.40 : x
  2. Step 2: Convert to fraction form
    1,640,443.40/2,460,665.10 = 643,171.40/x
  3. Step 3: Cross multiply
    1,640,443.40x = 2,460,665.10 × 643,171.40
  4. Step 4: Simplify right side
    1,640,443.40x = 1,582,629,417,298.14
  5. Step 5: Solve for x
    x = 1,582,629,417,298.14/1,640,443.40
  6. Step 6: Final answer
    x = 964,757.10

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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.