Home / 426,492,031.70-639,738,047.55-349,007,933.90

Finding the Fourth Proportional to 426,492,031.70, 639,738,047.55 and 349,007,933.90

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Solution

The fourth proportional to 426,492,031.70, 639,738,047.55 and 349,007,933.90 is: 523,511,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,031.70 : 639,738,047.55 = 349,007,933.90 : x
  2. Step 2: Convert to fraction form
    426,492,031.70/639,738,047.55 = 349,007,933.90/x
  3. Step 3: Cross multiply
    426,492,031.70x = 639,738,047.55 × 349,007,933.90
  4. Step 4: Simplify right side
    426,492,031.70x = 223,273,654,212,645,440
  5. Step 5: Solve for x
    x = 223,273,654,212,645,440/426,492,031.70
  6. Step 6: Final answer
    x = 523,511,900.85

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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.