Home / 782,461,477.20-1,173,692,215.80-419,664,421.20

Finding the Fourth Proportional to 782,461,477.20, 1,173,692,215.80 and 419,664,421.20

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Solution

The fourth proportional to 782,461,477.20, 1,173,692,215.80 and 419,664,421.20 is: 629,496,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,461,477.20 : 1,173,692,215.80 = 419,664,421.20 : x
  2. Step 2: Convert to fraction form
    782,461,477.20/1,173,692,215.80 = 419,664,421.20/x
  3. Step 3: Cross multiply
    782,461,477.20x = 1,173,692,215.80 × 419,664,421.20
  4. Step 4: Simplify right side
    782,461,477.20x = 492,556,864,410,652,480
  5. Step 5: Solve for x
    x = 492,556,864,410,652,480/782,461,477.20
  6. Step 6: Final answer
    x = 629,496,631.80

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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.