Home / 436,422,390.30-654,633,585.45-389,070,997.20

Finding the Fourth Proportional to 436,422,390.30, 654,633,585.45 and 389,070,997.20

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Solution

The fourth proportional to 436,422,390.30, 654,633,585.45 and 389,070,997.20 is: 583,606,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,422,390.30 : 654,633,585.45 = 389,070,997.20 : x
  2. Step 2: Convert to fraction form
    436,422,390.30/654,633,585.45 = 389,070,997.20/x
  3. Step 3: Cross multiply
    436,422,390.30x = 654,633,585.45 × 389,070,997.20
  4. Step 4: Simplify right side
    436,422,390.30x = 254,698,941,891,642,912
  5. Step 5: Solve for x
    x = 254,698,941,891,642,912/436,422,390.30
  6. Step 6: Final answer
    x = 583,606,495.80

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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.