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Finding the Fourth Proportional to 478,546.28, 660,423.36 and 263,686.32

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Solution

The fourth proportional to 478,546.28, 660,423.36 and 263,686.32 is: 363,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,546.28 : 660,423.36 = 263,686.32 : x
  2. Step 2: Convert to fraction form
    478,546.28/660,423.36 = 263,686.32/x
  3. Step 3: Cross multiply
    478,546.28x = 660,423.36 × 263,686.32
  4. Step 4: Simplify right side
    478,546.28x = 174,144,605,440.44
  5. Step 5: Solve for x
    x = 174,144,605,440.44/478,546.28
  6. Step 6: Final answer
    x = 363,903.37

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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.