Home / 1,210,809,467.21-1,670,917,000.79-653,892,460.61

Finding the Fourth Proportional to 1,210,809,467.21, 1,670,917,000.79 and 653,892,460.61

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Solution

The fourth proportional to 1,210,809,467.21, 1,670,917,000.79 and 653,892,460.61 is: 902,371,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,809,467.21 : 1,670,917,000.79 = 653,892,460.61 : x
  2. Step 2: Convert to fraction form
    1,210,809,467.21/1,670,917,000.79 = 653,892,460.61/x
  3. Step 3: Cross multiply
    1,210,809,467.21x = 1,670,917,000.79 × 653,892,460.61
  4. Step 4: Simplify right side
    1,210,809,467.21x = 1,092,600,029,121,654,400
  5. Step 5: Solve for x
    x = 1,092,600,029,121,654,400/1,210,809,467.21
  6. Step 6: Final answer
    x = 902,371,561.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.