Home / 980,080,979.20-1,470,121,468.80-434,877,625.60

Finding the Fourth Proportional to 980,080,979.20, 1,470,121,468.80 and 434,877,625.60

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Solution

The fourth proportional to 980,080,979.20, 1,470,121,468.80 and 434,877,625.60 is: 652,316,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,080,979.20 : 1,470,121,468.80 = 434,877,625.60 : x
  2. Step 2: Convert to fraction form
    980,080,979.20/1,470,121,468.80 = 434,877,625.60/x
  3. Step 3: Cross multiply
    980,080,979.20x = 1,470,121,468.80 × 434,877,625.60
  4. Step 4: Simplify right side
    980,080,979.20x = 639,322,933,695,328,512
  5. Step 5: Solve for x
    x = 639,322,933,695,328,512/980,080,979.20
  6. Step 6: Final answer
    x = 652,316,438.40

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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.