Home / 623,900,623.21-861,009,762.78-345,442,171.36

Finding the Fourth Proportional to 623,900,623.21, 861,009,762.78 and 345,442,171.36

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Solution

The fourth proportional to 623,900,623.21, 861,009,762.78 and 345,442,171.36 is: 476,725,092.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,900,623.21 : 861,009,762.78 = 345,442,171.36 : x
  2. Step 2: Convert to fraction form
    623,900,623.21/861,009,762.78 = 345,442,171.36/x
  3. Step 3: Cross multiply
    623,900,623.21x = 861,009,762.78 × 345,442,171.36
  4. Step 4: Simplify right side
    623,900,623.21x = 297,429,082,016,881,728
  5. Step 5: Solve for x
    x = 297,429,082,016,881,728/623,900,623.21
  6. Step 6: Final answer
    x = 476,725,092.03

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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.