Home / 727,218.60-1,089,515.70-643,237.80

Finding the Fourth Proportional to 727,218.60, 1,089,515.70 and 643,237.80

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Solution

The fourth proportional to 727,218.60, 1,089,515.70 and 643,237.80 is: 963,696.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,218.60 : 1,089,515.70 = 643,237.80 : x
  2. Step 2: Convert to fraction form
    727,218.60/1,089,515.70 = 643,237.80/x
  3. Step 3: Cross multiply
    727,218.60x = 1,089,515.70 × 643,237.80
  4. Step 4: Simplify right side
    727,218.60x = 700,817,681,933.46
  5. Step 5: Solve for x
    x = 700,817,681,933.46/727,218.60
  6. Step 6: Final answer
    x = 963,696.04

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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.