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Finding the Fourth Proportional to 1,985,473,602.80, 2,978,210,404.20 and 531,451,026.80

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Solution

The fourth proportional to 1,985,473,602.80, 2,978,210,404.20 and 531,451,026.80 is: 797,176,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,473,602.80 : 2,978,210,404.20 = 531,451,026.80 : x
  2. Step 2: Convert to fraction form
    1,985,473,602.80/2,978,210,404.20 = 531,451,026.80/x
  3. Step 3: Cross multiply
    1,985,473,602.80x = 2,978,210,404.20 × 531,451,026.80
  4. Step 4: Simplify right side
    1,985,473,602.80x = 1,582,772,977,338,532,864
  5. Step 5: Solve for x
    x = 1,582,772,977,338,532,864/1,985,473,602.80
  6. Step 6: Final answer
    x = 797,176,540.20

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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.