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Finding the Fourth Proportional to 478,440.84, 660,224.70 and 263,575.20

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Solution

The fourth proportional to 478,440.84, 660,224.70 and 263,575.20 is: 363,720.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,440.84 : 660,224.70 = 263,575.20 : x
  2. Step 2: Convert to fraction form
    478,440.84/660,224.70 = 263,575.20/x
  3. Step 3: Cross multiply
    478,440.84x = 660,224.70 × 263,575.20
  4. Step 4: Simplify right side
    478,440.84x = 174,018,857,347.44
  5. Step 5: Solve for x
    x = 174,018,857,347.44/478,440.84
  6. Step 6: Final answer
    x = 363,720.74

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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.