Home / 836,659.80-1,254,112.47-409,606.74

Finding the Fourth Proportional to 836,659.80, 1,254,112.47 and 409,606.74

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Solution

The fourth proportional to 836,659.80, 1,254,112.47 and 409,606.74 is: 613,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,659.80 : 1,254,112.47 = 409,606.74 : x
  2. Step 2: Convert to fraction form
    836,659.80/1,254,112.47 = 409,606.74/x
  3. Step 3: Cross multiply
    836,659.80x = 1,254,112.47 × 409,606.74
  4. Step 4: Simplify right side
    836,659.80x = 513,692,920,430.05
  5. Step 5: Solve for x
    x = 513,692,920,430.05/836,659.80
  6. Step 6: Final answer
    x = 613,980.64

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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.