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Finding the Fourth Proportional to 520,097.60, 780,146.40 and 488,604.80

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Solution

The fourth proportional to 520,097.60, 780,146.40 and 488,604.80 is: 732,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,097.60 : 780,146.40 = 488,604.80 : x
  2. Step 2: Convert to fraction form
    520,097.60/780,146.40 = 488,604.80/x
  3. Step 3: Cross multiply
    520,097.60x = 780,146.40 × 488,604.80
  4. Step 4: Simplify right side
    520,097.60x = 381,183,275,742.72
  5. Step 5: Solve for x
    x = 381,183,275,742.72/520,097.60
  6. Step 6: Final answer
    x = 732,907.20

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1.5x scale

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.