Home / 727,801.60-1,089,628.80-644,857.60

Finding the Fourth Proportional to 727,801.60, 1,089,628.80 and 644,857.60

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Solution

The fourth proportional to 727,801.60, 1,089,628.80 and 644,857.60 is: 965,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,801.60 : 1,089,628.80 = 644,857.60 : x
  2. Step 2: Convert to fraction form
    727,801.60/1,089,628.80 = 644,857.60/x
  3. Step 3: Cross multiply
    727,801.60x = 1,089,628.80 × 644,857.60
  4. Step 4: Simplify right side
    727,801.60x = 702,655,412,858.88
  5. Step 5: Solve for x
    x = 702,655,412,858.88/727,801.60
  6. Step 6: Final answer
    x = 965,449.12

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1.5x scale

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.