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Finding the Fourth Proportional to 519,930.30, 780,004.80 and 295,106.70

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Solution

The fourth proportional to 519,930.30, 780,004.80 and 295,106.70 is: 442,722.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,930.30 : 780,004.80 = 295,106.70 : x
  2. Step 2: Convert to fraction form
    519,930.30/780,004.80 = 295,106.70/x
  3. Step 3: Cross multiply
    519,930.30x = 780,004.80 × 295,106.70
  4. Step 4: Simplify right side
    519,930.30x = 230,184,642,512.16
  5. Step 5: Solve for x
    x = 230,184,642,512.16/519,930.30
  6. Step 6: Final answer
    x = 442,722.12

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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.