Home / 980,080,999.20-1,470,121,498.80-434,877,645.60

Finding the Fourth Proportional to 980,080,999.20, 1,470,121,498.80 and 434,877,645.60

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Solution

The fourth proportional to 980,080,999.20, 1,470,121,498.80 and 434,877,645.60 is: 652,316,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,080,999.20 : 1,470,121,498.80 = 434,877,645.60 : x
  2. Step 2: Convert to fraction form
    980,080,999.20/1,470,121,498.80 = 434,877,645.60/x
  3. Step 3: Cross multiply
    980,080,999.20x = 1,470,121,498.80 × 434,877,645.60
  4. Step 4: Simplify right side
    980,080,999.20x = 639,322,976,144,087,296
  5. Step 5: Solve for x
    x = 639,322,976,144,087,296/980,080,999.20
  6. Step 6: Final answer
    x = 652,316,468.40

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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.