Home / 685,637.40-1,028,580.90-236,422.68

Finding the Fourth Proportional to 685,637.40, 1,028,580.90 and 236,422.68

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Solution

The fourth proportional to 685,637.40, 1,028,580.90 and 236,422.68 is: 354,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,637.40 : 1,028,580.90 = 236,422.68 : x
  2. Step 2: Convert to fraction form
    685,637.40/1,028,580.90 = 236,422.68/x
  3. Step 3: Cross multiply
    685,637.40x = 1,028,580.90 × 236,422.68
  4. Step 4: Simplify right side
    685,637.40x = 243,179,852,974.81
  5. Step 5: Solve for x
    x = 243,179,852,974.81/685,637.40
  6. Step 6: Final answer
    x = 354,677.05

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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.