Home / 1,433,683.72-1,978,256.80-821,718.60

Finding the Fourth Proportional to 1,433,683.72, 1,978,256.80 and 821,718.60

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Solution

The fourth proportional to 1,433,683.72, 1,978,256.80 and 821,718.60 is: 1,133,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,683.72 : 1,978,256.80 = 821,718.60 : x
  2. Step 2: Convert to fraction form
    1,433,683.72/1,978,256.80 = 821,718.60/x
  3. Step 3: Cross multiply
    1,433,683.72x = 1,978,256.80 × 821,718.60
  4. Step 4: Simplify right side
    1,433,683.72x = 1,625,570,408,136.48
  5. Step 5: Solve for x
    x = 1,625,570,408,136.48/1,433,683.72
  6. Step 6: Final answer
    x = 1,133,841.72

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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.