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Finding the Fourth Proportional to 478,514.10, 660,364.41 and 274,602.32

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Solution

The fourth proportional to 478,514.10, 660,364.41 and 274,602.32 is: 378,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,514.10 : 660,364.41 = 274,602.32 : x
  2. Step 2: Convert to fraction form
    478,514.10/660,364.41 = 274,602.32/x
  3. Step 3: Cross multiply
    478,514.10x = 660,364.41 × 274,602.32
  4. Step 4: Simplify right side
    478,514.10x = 181,337,594,356.60
  5. Step 5: Solve for x
    x = 181,337,594,356.60/478,514.10
  6. Step 6: Final answer
    x = 378,959.78

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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.