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Finding the Fourth Proportional to 520,040.40, 779,671.80 and 220,275.60

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Solution

The fourth proportional to 520,040.40, 779,671.80 and 220,275.60 is: 330,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,040.40 : 779,671.80 = 220,275.60 : x
  2. Step 2: Convert to fraction form
    520,040.40/779,671.80 = 220,275.60/x
  3. Step 3: Cross multiply
    520,040.40x = 779,671.80 × 220,275.60
  4. Step 4: Simplify right side
    520,040.40x = 171,742,673,548.08
  5. Step 5: Solve for x
    x = 171,742,673,548.08/520,040.40
  6. Step 6: Final answer
    x = 330,248.71

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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.