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Finding the Fourth Proportional to 520,140.96, 780,320.52 and 295,605.36

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Solution

The fourth proportional to 520,140.96, 780,320.52 and 295,605.36 is: 443,470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,140.96 : 780,320.52 = 295,605.36 : x
  2. Step 2: Convert to fraction form
    520,140.96/780,320.52 = 295,605.36/x
  3. Step 3: Cross multiply
    520,140.96x = 780,320.52 × 295,605.36
  4. Step 4: Simplify right side
    520,140.96x = 230,666,928,229.99
  5. Step 5: Solve for x
    x = 230,666,928,229.99/520,140.96
  6. Step 6: Final answer
    x = 443,470.03

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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.