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Finding the Fourth Proportional to 499,783.28, 689,698.86 and 270,340.70

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Solution

The fourth proportional to 499,783.28, 689,698.86 and 270,340.70 is: 373,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,783.28 : 689,698.86 = 270,340.70 : x
  2. Step 2: Convert to fraction form
    499,783.28/689,698.86 = 270,340.70/x
  3. Step 3: Cross multiply
    499,783.28x = 689,698.86 × 270,340.70
  4. Step 4: Simplify right side
    499,783.28x = 186,453,672,601.60
  5. Step 5: Solve for x
    x = 186,453,672,601.60/499,783.28
  6. Step 6: Final answer
    x = 373,069.05

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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.