Home / 624,100,720-861,261,870.72-345,636,405.76

Finding the Fourth Proportional to 624,100,720, 861,261,870.72 and 345,636,405.76

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Solution

The fourth proportional to 624,100,720, 861,261,870.72 and 345,636,405.76 is: 476,979,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,100,720 : 861,261,870.72 = 345,636,405.76 : x
  2. Step 2: Convert to fraction form
    624,100,720/861,261,870.72 = 345,636,405.76/x
  3. Step 3: Cross multiply
    624,100,720x = 861,261,870.72 × 345,636,405.76
  4. Step 4: Simplify right side
    624,100,720x = 297,683,457,413,794,560
  5. Step 5: Solve for x
    x = 297,683,457,413,794,560/624,100,720
  6. Step 6: Final answer
    x = 476,979,833.34

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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.