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Finding the Fourth Proportional to 472,392,711.60, 708,589,067.40 and 300,630,980.40

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Solution

The fourth proportional to 472,392,711.60, 708,589,067.40 and 300,630,980.40 is: 450,946,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,711.60 : 708,589,067.40 = 300,630,980.40 : x
  2. Step 2: Convert to fraction form
    472,392,711.60/708,589,067.40 = 300,630,980.40/x
  3. Step 3: Cross multiply
    472,392,711.60x = 708,589,067.40 × 300,630,980.40
  4. Step 4: Simplify right side
    472,392,711.60x = 213,023,826,033,183,648
  5. Step 5: Solve for x
    x = 213,023,826,033,183,648/472,392,711.60
  6. Step 6: Final answer
    x = 450,946,470.60

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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.