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Finding the Fourth Proportional to 623,752,898.48, 860,785,802.36 and 345,299,072.12

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Solution

The fourth proportional to 623,752,898.48, 860,785,802.36 and 345,299,072.12 is: 476,516,485.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,752,898.48 : 860,785,802.36 = 345,299,072.12 : x
  2. Step 2: Convert to fraction form
    623,752,898.48/860,785,802.36 = 345,299,072.12/x
  3. Step 3: Cross multiply
    623,752,898.48x = 860,785,802.36 × 345,299,072.12
  4. Step 4: Simplify right side
    623,752,898.48x = 297,228,538,848,977,728
  5. Step 5: Solve for x
    x = 297,228,538,848,977,728/623,752,898.48
  6. Step 6: Final answer
    x = 476,516,485.25

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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.