Home / 470,490.78-648,090.07-379,592.38

Finding the Fourth Proportional to 470,490.78, 648,090.07 and 379,592.38

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Solution

The fourth proportional to 470,490.78, 648,090.07 and 379,592.38 is: 522,879.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,490.78 : 648,090.07 = 379,592.38 : x
  2. Step 2: Convert to fraction form
    470,490.78/648,090.07 = 379,592.38/x
  3. Step 3: Cross multiply
    470,490.78x = 648,090.07 × 379,592.38
  4. Step 4: Simplify right side
    470,490.78x = 246,010,052,125.67
  5. Step 5: Solve for x
    x = 246,010,052,125.67/470,490.78
  6. Step 6: Final answer
    x = 522,879.65

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1.5x scale

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.