Home / 1,640,638.40-2,461,346.40-842,043.20

Finding the Fourth Proportional to 1,640,638.40, 2,461,346.40 and 842,043.20

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Solution

The fourth proportional to 1,640,638.40, 2,461,346.40 and 842,043.20 is: 1,263,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,638.40 : 2,461,346.40 = 842,043.20 : x
  2. Step 2: Convert to fraction form
    1,640,638.40/2,461,346.40 = 842,043.20/x
  3. Step 3: Cross multiply
    1,640,638.40x = 2,461,346.40 × 842,043.20
  4. Step 4: Simplify right side
    1,640,638.40x = 2,072,559,998,964.48
  5. Step 5: Solve for x
    x = 2,072,559,998,964.48/1,640,638.40
  6. Step 6: Final answer
    x = 1,263,264.35

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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.