Home / 818,538.16-1,129,565.64-455,961.52

Finding the Fourth Proportional to 818,538.16, 1,129,565.64 and 455,961.52

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Solution

The fourth proportional to 818,538.16, 1,129,565.64 and 455,961.52 is: 629,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,538.16 : 1,129,565.64 = 455,961.52 : x
  2. Step 2: Convert to fraction form
    818,538.16/1,129,565.64 = 455,961.52/x
  3. Step 3: Cross multiply
    818,538.16x = 1,129,565.64 × 455,961.52
  4. Step 4: Simplify right side
    818,538.16x = 515,038,466,154.17
  5. Step 5: Solve for x
    x = 515,038,466,154.17/818,538.16
  6. Step 6: Final answer
    x = 629,217.42

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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.