Home / 428,265.50-591,646.28-281,437.61

Finding the Fourth Proportional to 428,265.50, 591,646.28 and 281,437.61

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Solution

The fourth proportional to 428,265.50, 591,646.28 and 281,437.61 is: 388,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,265.50 : 591,646.28 = 281,437.61 : x
  2. Step 2: Convert to fraction form
    428,265.50/591,646.28 = 281,437.61/x
  3. Step 3: Cross multiply
    428,265.50x = 591,646.28 × 281,437.61
  4. Step 4: Simplify right side
    428,265.50x = 166,511,510,643.17
  5. Step 5: Solve for x
    x = 166,511,510,643.17/428,265.50
  6. Step 6: Final answer
    x = 388,804.40

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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.