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Finding the Fourth Proportional to 1,210,809,466.82, 1,670,917,000.25 and 653,892,460.22

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Solution

The fourth proportional to 1,210,809,466.82, 1,670,917,000.25 and 653,892,460.22 is: 902,371,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,809,466.82 : 1,670,917,000.25 = 653,892,460.22 : x
  2. Step 2: Convert to fraction form
    1,210,809,466.82/1,670,917,000.25 = 653,892,460.22/x
  3. Step 3: Cross multiply
    1,210,809,466.82x = 1,670,917,000.25 × 653,892,460.22
  4. Step 4: Simplify right side
    1,210,809,466.82x = 1,092,600,028,111,452,160
  5. Step 5: Solve for x
    x = 1,092,600,028,111,452,160/1,210,809,466.82
  6. Step 6: Final answer
    x = 902,371,560.56

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Double scale
Find fourth proportional to 1,210,809,467.82, 1,670,917,001.63 and 653,892,461.22
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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.