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Finding the Fourth Proportional to 373,313,709.80, 521,429,870.20 and 373,313,709.80

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Solution

The fourth proportional to 373,313,709.80, 521,429,870.20 and 373,313,709.80 is: 521,429,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,313,709.80 : 521,429,870.20 = 373,313,709.80 : x
  2. Step 2: Convert to fraction form
    373,313,709.80/521,429,870.20 = 373,313,709.80/x
  3. Step 3: Cross multiply
    373,313,709.80x = 521,429,870.20 × 373,313,709.80
  4. Step 4: Simplify right side
    373,313,709.80x = 194,656,919,244,894,464
  5. Step 5: Solve for x
    x = 194,656,919,244,894,464/373,313,709.80
  6. Step 6: Final answer
    x = 521,429,870.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.