Home / 290,780,036.80-436,408,000.80-288,512,555.20

Finding the Fourth Proportional to 290,780,036.80, 436,408,000.80 and 288,512,555.20

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Solution

The fourth proportional to 290,780,036.80, 436,408,000.80 and 288,512,555.20 is: 433,004,922.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,780,036.80 : 436,408,000.80 = 288,512,555.20 : x
  2. Step 2: Convert to fraction form
    290,780,036.80/436,408,000.80 = 288,512,555.20/x
  3. Step 3: Cross multiply
    290,780,036.80x = 436,408,000.80 × 288,512,555.20
  4. Step 4: Simplify right side
    290,780,036.80x = 125,909,187,420,531,648
  5. Step 5: Solve for x
    x = 125,909,187,420,531,648/290,780,036.80
  6. Step 6: Final answer
    x = 433,004,922.92

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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.