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Finding the Fourth Proportional to 520,124.94, 780,131.52 and 352,719.81

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Solution

The fourth proportional to 520,124.94, 780,131.52 and 352,719.81 is: 529,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,124.94 : 780,131.52 = 352,719.81 : x
  2. Step 2: Convert to fraction form
    520,124.94/780,131.52 = 352,719.81/x
  3. Step 3: Cross multiply
    520,124.94x = 780,131.52 × 352,719.81
  4. Step 4: Simplify right side
    520,124.94x = 275,167,841,509.41
  5. Step 5: Solve for x
    x = 275,167,841,509.41/520,124.94
  6. Step 6: Final answer
    x = 529,041.81

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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.