Home / 818,830.28-1,129,951.86-456,235.40

Finding the Fourth Proportional to 818,830.28, 1,129,951.86 and 456,235.40

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Solution

The fourth proportional to 818,830.28, 1,129,951.86 and 456,235.40 is: 629,585.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,830.28 : 1,129,951.86 = 456,235.40 : x
  2. Step 2: Convert to fraction form
    818,830.28/1,129,951.86 = 456,235.40/x
  3. Step 3: Cross multiply
    818,830.28x = 1,129,951.86 × 456,235.40
  4. Step 4: Simplify right side
    818,830.28x = 515,524,038,827.84
  5. Step 5: Solve for x
    x = 515,524,038,827.84/818,830.28
  6. Step 6: Final answer
    x = 629,585.95

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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.