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Finding the Fourth Proportional to 478,452.78, 660,239.28 and 274,461.54

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Solution

The fourth proportional to 478,452.78, 660,239.28 and 274,461.54 is: 378,742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,452.78 : 660,239.28 = 274,461.54 : x
  2. Step 2: Convert to fraction form
    478,452.78/660,239.28 = 274,461.54/x
  3. Step 3: Cross multiply
    478,452.78x = 660,239.28 × 274,461.54
  4. Step 4: Simplify right side
    478,452.78x = 181,210,289,557.29
  5. Step 5: Solve for x
    x = 181,210,289,557.29/478,452.78
  6. Step 6: Final answer
    x = 378,742.26

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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.