Home / 30,574,279.20-45,861,418.80-12,378,439.20

Finding the Fourth Proportional to 30,574,279.20, 45,861,418.80 and 12,378,439.20

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Solution

The fourth proportional to 30,574,279.20, 45,861,418.80 and 12,378,439.20 is: 18,567,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,574,279.20 : 45,861,418.80 = 12,378,439.20 : x
  2. Step 2: Convert to fraction form
    30,574,279.20/45,861,418.80 = 12,378,439.20/x
  3. Step 3: Cross multiply
    30,574,279.20x = 45,861,418.80 × 12,378,439.20
  4. Step 4: Simplify right side
    30,574,279.20x = 567,692,784,241,536.88
  5. Step 5: Solve for x
    x = 567,692,784,241,536.88/30,574,279.20
  6. Step 6: Final answer
    x = 18,567,658.80

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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.