Home / 1,089,807.40-1,635,683.10-639,965.80

Finding the Fourth Proportional to 1,089,807.40, 1,635,683.10 and 639,965.80

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Solution

The fourth proportional to 1,089,807.40, 1,635,683.10 and 639,965.80 is: 960,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,807.40 : 1,635,683.10 = 639,965.80 : x
  2. Step 2: Convert to fraction form
    1,089,807.40/1,635,683.10 = 639,965.80/x
  3. Step 3: Cross multiply
    1,089,807.40x = 1,635,683.10 × 639,965.80
  4. Step 4: Simplify right side
    1,089,807.40x = 1,046,781,243,637.98
  5. Step 5: Solve for x
    x = 1,046,781,243,637.98/1,089,807.40
  6. Step 6: Final answer
    x = 960,519.49

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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.