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Finding the Fourth Proportional to 499,647.56, 689,580.35 and 281,900.93

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Solution

The fourth proportional to 499,647.56, 689,580.35 and 281,900.93 is: 389,060.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,647.56 : 689,580.35 = 281,900.93 : x
  2. Step 2: Convert to fraction form
    499,647.56/689,580.35 = 281,900.93/x
  3. Step 3: Cross multiply
    499,647.56x = 689,580.35 × 281,900.93
  4. Step 4: Simplify right side
    499,647.56x = 194,393,337,117.32
  5. Step 5: Solve for x
    x = 194,393,337,117.32/499,647.56
  6. Step 6: Final answer
    x = 389,060.92

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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.