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Finding the Fourth Proportional to 370,405.20, 554,951.70 and 313,980.60

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Solution

The fourth proportional to 370,405.20, 554,951.70 and 313,980.60 is: 470,414.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,405.20 : 554,951.70 = 313,980.60 : x
  2. Step 2: Convert to fraction form
    370,405.20/554,951.70 = 313,980.60/x
  3. Step 3: Cross multiply
    370,405.20x = 554,951.70 × 313,980.60
  4. Step 4: Simplify right side
    370,405.20x = 174,244,067,737.02
  5. Step 5: Solve for x
    x = 174,244,067,737.02/370,405.20
  6. Step 6: Final answer
    x = 470,414.75

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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.