Home / 727,216.60-1,089,512.70-643,235.80

Finding the Fourth Proportional to 727,216.60, 1,089,512.70 and 643,235.80

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Solution

The fourth proportional to 727,216.60, 1,089,512.70 and 643,235.80 is: 963,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,216.60 : 1,089,512.70 = 643,235.80 : x
  2. Step 2: Convert to fraction form
    727,216.60/1,089,512.70 = 643,235.80/x
  3. Step 3: Cross multiply
    727,216.60x = 1,089,512.70 × 643,235.80
  4. Step 4: Simplify right side
    727,216.60x = 700,813,573,194.66
  5. Step 5: Solve for x
    x = 700,813,573,194.66/727,216.60
  6. Step 6: Final answer
    x = 963,693.04

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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.