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Finding the Fourth Proportional to 478,680.99, 660,609.32 and 263,820.54

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Solution

The fourth proportional to 478,680.99, 660,609.32 and 263,820.54 is: 364,088.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,680.99 : 660,609.32 = 263,820.54 : x
  2. Step 2: Convert to fraction form
    478,680.99/660,609.32 = 263,820.54/x
  3. Step 3: Cross multiply
    478,680.99x = 660,609.32 × 263,820.54
  4. Step 4: Simplify right side
    478,680.99x = 174,282,310,173.61
  5. Step 5: Solve for x
    x = 174,282,310,173.61/478,680.99
  6. Step 6: Final answer
    x = 364,088.64

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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.