Home / 428,356.08-591,146.64-258,557.04

Finding the Fourth Proportional to 428,356.08, 591,146.64 and 258,557.04

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Solution

The fourth proportional to 428,356.08, 591,146.64 and 258,557.04 is: 356,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,356.08 : 591,146.64 = 258,557.04 : x
  2. Step 2: Convert to fraction form
    428,356.08/591,146.64 = 258,557.04/x
  3. Step 3: Cross multiply
    428,356.08x = 591,146.64 × 258,557.04
  4. Step 4: Simplify right side
    428,356.08x = 152,845,125,444.35
  5. Step 5: Solve for x
    x = 152,845,125,444.35/428,356.08
  6. Step 6: Final answer
    x = 356,817.92

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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.