Home / 319,134,680.80-478,702,021.20-278,823,896.80

Finding the Fourth Proportional to 319,134,680.80, 478,702,021.20 and 278,823,896.80

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Solution

The fourth proportional to 319,134,680.80, 478,702,021.20 and 278,823,896.80 is: 418,235,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,134,680.80 : 478,702,021.20 = 278,823,896.80 : x
  2. Step 2: Convert to fraction form
    319,134,680.80/478,702,021.20 = 278,823,896.80/x
  3. Step 3: Cross multiply
    319,134,680.80x = 478,702,021.20 × 278,823,896.80
  4. Step 4: Simplify right side
    319,134,680.80x = 133,473,562,957,020,208
  5. Step 5: Solve for x
    x = 133,473,562,957,020,208/319,134,680.80
  6. Step 6: Final answer
    x = 418,235,845.20

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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.