Home / 818,142.50-1,129,069.94-455,543.37

Finding the Fourth Proportional to 818,142.50, 1,129,069.94 and 455,543.37

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Solution

The fourth proportional to 818,142.50, 1,129,069.94 and 455,543.37 is: 628,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,142.50 : 1,129,069.94 = 455,543.37 : x
  2. Step 2: Convert to fraction form
    818,142.50/1,129,069.94 = 455,543.37/x
  3. Step 3: Cross multiply
    818,142.50x = 1,129,069.94 × 455,543.37
  4. Step 4: Simplify right side
    818,142.50x = 514,340,323,155.58
  5. Step 5: Solve for x
    x = 514,340,323,155.58/818,142.50
  6. Step 6: Final answer
    x = 628,668.38

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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.