Home / 1,089,120.72-1,502,766-636,324.24

Finding the Fourth Proportional to 1,089,120.72, 1,502,766 and 636,324.24

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Solution

The fourth proportional to 1,089,120.72, 1,502,766 and 636,324.24 is: 877,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,120.72 : 1,502,766 = 636,324.24 : x
  2. Step 2: Convert to fraction form
    1,089,120.72/1,502,766 = 636,324.24/x
  3. Step 3: Cross multiply
    1,089,120.72x = 1,502,766 × 636,324.24
  4. Step 4: Simplify right side
    1,089,120.72x = 956,246,432,847.84
  5. Step 5: Solve for x
    x = 956,246,432,847.84/1,089,120.72
  6. Step 6: Final answer
    x = 877,998.57

Related Problems

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Half scale
Find fourth proportional to 2,178,241.44, 3,005,532 and 1,272,648.48
Double scale
Find fourth proportional to 1,089,121.72, 1,502,767.38 and 636,325.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.