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Finding the Fourth Proportional to 397,994.80, 596,603.40 and 356,004.40

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Solution

The fourth proportional to 397,994.80, 596,603.40 and 356,004.40 is: 533,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,994.80 : 596,603.40 = 356,004.40 : x
  2. Step 2: Convert to fraction form
    397,994.80/596,603.40 = 356,004.40/x
  3. Step 3: Cross multiply
    397,994.80x = 596,603.40 × 356,004.40
  4. Step 4: Simplify right side
    397,994.80x = 212,393,435,454.96
  5. Step 5: Solve for x
    x = 212,393,435,454.96/397,994.80
  6. Step 6: Final answer
    x = 533,658.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.