Home / 810,203.60-1,215,305.40-621,246.80

Finding the Fourth Proportional to 810,203.60, 1,215,305.40 and 621,246.80

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Solution

The fourth proportional to 810,203.60, 1,215,305.40 and 621,246.80 is: 931,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,203.60 : 1,215,305.40 = 621,246.80 : x
  2. Step 2: Convert to fraction form
    810,203.60/1,215,305.40 = 621,246.80/x
  3. Step 3: Cross multiply
    810,203.60x = 1,215,305.40 × 621,246.80
  4. Step 4: Simplify right side
    810,203.60x = 755,004,590,772.72
  5. Step 5: Solve for x
    x = 755,004,590,772.72/810,203.60
  6. Step 6: Final answer
    x = 931,870.20

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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.