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Finding the Fourth Proportional to 478,509.87, 660,343.08 and 263,649.87

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Solution

The fourth proportional to 478,509.87, 660,343.08 and 263,649.87 is: 363,836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,509.87 : 660,343.08 = 263,649.87 : x
  2. Step 2: Convert to fraction form
    478,509.87/660,343.08 = 263,649.87/x
  3. Step 3: Cross multiply
    478,509.87x = 660,343.08 × 263,649.87
  4. Step 4: Simplify right side
    478,509.87x = 174,099,367,197.40
  5. Step 5: Solve for x
    x = 174,099,367,197.40/478,509.87
  6. Step 6: Final answer
    x = 363,836.52

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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.