Home / 660,378,328.80-990,567,493.20-507,794,546.40

Finding the Fourth Proportional to 660,378,328.80, 990,567,493.20 and 507,794,546.40

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Solution

The fourth proportional to 660,378,328.80, 990,567,493.20 and 507,794,546.40 is: 761,691,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,378,328.80 : 990,567,493.20 = 507,794,546.40 : x
  2. Step 2: Convert to fraction form
    660,378,328.80/990,567,493.20 = 507,794,546.40/x
  3. Step 3: Cross multiply
    660,378,328.80x = 990,567,493.20 × 507,794,546.40
  4. Step 4: Simplify right side
    660,378,328.80x = 503,004,770,888,079,104
  5. Step 5: Solve for x
    x = 503,004,770,888,079,104/660,378,328.80
  6. Step 6: Final answer
    x = 761,691,819.60

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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.