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Finding the Fourth Proportional to 678,828, 936,782.64 and 377,050.08

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Solution

The fourth proportional to 678,828, 936,782.64 and 377,050.08 is: 520,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,828 : 936,782.64 = 377,050.08 : x
  2. Step 2: Convert to fraction form
    678,828/936,782.64 = 377,050.08/x
  3. Step 3: Cross multiply
    678,828x = 936,782.64 × 377,050.08
  4. Step 4: Simplify right side
    678,828x = 353,213,969,354.61
  5. Step 5: Solve for x
    x = 353,213,969,354.61/678,828
  6. Step 6: Final answer
    x = 520,329.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.