Home / 436,428,307.80-654,642,461.70-389,076,914.70

Finding the Fourth Proportional to 436,428,307.80, 654,642,461.70 and 389,076,914.70

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Solution

The fourth proportional to 436,428,307.80, 654,642,461.70 and 389,076,914.70 is: 583,615,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,428,307.80 : 654,642,461.70 = 389,076,914.70 : x
  2. Step 2: Convert to fraction form
    436,428,307.80/654,642,461.70 = 389,076,914.70/x
  3. Step 3: Cross multiply
    436,428,307.80x = 654,642,461.70 × 389,076,914.70
  4. Step 4: Simplify right side
    436,428,307.80x = 254,706,269,229,848,928
  5. Step 5: Solve for x
    x = 254,706,269,229,848,928/436,428,307.80
  6. Step 6: Final answer
    x = 583,615,372.05

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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.