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Finding the Fourth Proportional to 545,119.74, 817,846.74 and 279,068.76

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Solution

The fourth proportional to 545,119.74, 817,846.74 and 279,068.76 is: 418,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,119.74 : 817,846.74 = 279,068.76 : x
  2. Step 2: Convert to fraction form
    545,119.74/817,846.74 = 279,068.76/x
  3. Step 3: Cross multiply
    545,119.74x = 817,846.74 × 279,068.76
  4. Step 4: Simplify right side
    545,119.74x = 228,235,475,601.84
  5. Step 5: Solve for x
    x = 228,235,475,601.84/545,119.74
  6. Step 6: Final answer
    x = 418,688.70

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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.