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Finding the Fourth Proportional to 478,514.78, 660,365.36 and 274,603.01

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Solution

The fourth proportional to 478,514.78, 660,365.36 and 274,603.01 is: 378,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,514.78 : 660,365.36 = 274,603.01 : x
  2. Step 2: Convert to fraction form
    478,514.78/660,365.36 = 274,603.01/x
  3. Step 3: Cross multiply
    478,514.78x = 660,365.36 × 274,603.01
  4. Step 4: Simplify right side
    478,514.78x = 181,338,310,880.89
  5. Step 5: Solve for x
    x = 181,338,310,880.89/478,514.78
  6. Step 6: Final answer
    x = 378,960.74

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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.