Home / 742,303,461.12-1,113,914,992.19-431,557,328.31

Finding the Fourth Proportional to 742,303,461.12, 1,113,914,992.19 and 431,557,328.31

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Solution

The fourth proportional to 742,303,461.12, 1,113,914,992.19 and 431,557,328.31 is: 647,603,309.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,303,461.12 : 1,113,914,992.19 = 431,557,328.31 : x
  2. Step 2: Convert to fraction form
    742,303,461.12/1,113,914,992.19 = 431,557,328.31/x
  3. Step 3: Cross multiply
    742,303,461.12x = 1,113,914,992.19 × 431,557,328.31
  4. Step 4: Simplify right side
    742,303,461.12x = 480,718,177,991,813,120
  5. Step 5: Solve for x
    x = 480,718,177,991,813,120/742,303,461.12
  6. Step 6: Final answer
    x = 647,603,309.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.