Home / 624,100,721-861,261,872.10-345,636,406.76

Finding the Fourth Proportional to 624,100,721, 861,261,872.10 and 345,636,406.76

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Solution

The fourth proportional to 624,100,721, 861,261,872.10 and 345,636,406.76 is: 476,979,834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,100,721 : 861,261,872.10 = 345,636,406.76 : x
  2. Step 2: Convert to fraction form
    624,100,721/861,261,872.10 = 345,636,406.76/x
  3. Step 3: Cross multiply
    624,100,721x = 861,261,872.10 × 345,636,406.76
  4. Step 4: Simplify right side
    624,100,721x = 297,683,458,752,034,688
  5. Step 5: Solve for x
    x = 297,683,458,752,034,688/624,100,721
  6. Step 6: Final answer
    x = 476,979,834.72

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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.