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Finding the Fourth Proportional to 520,081.60, 779,539.20 and 267,264.40

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Solution

The fourth proportional to 520,081.60, 779,539.20 and 267,264.40 is: 400,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,081.60 : 779,539.20 = 267,264.40 : x
  2. Step 2: Convert to fraction form
    520,081.60/779,539.20 = 267,264.40/x
  3. Step 3: Cross multiply
    520,081.60x = 779,539.20 × 267,264.40
  4. Step 4: Simplify right side
    520,081.60x = 208,343,076,564.48
  5. Step 5: Solve for x
    x = 208,343,076,564.48/520,081.60
  6. Step 6: Final answer
    x = 400,596.90

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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.