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Finding the Fourth Proportional to 478,501.44, 660,328.74 and 263,636.52

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Solution

The fourth proportional to 478,501.44, 660,328.74 and 263,636.52 is: 363,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,501.44 : 660,328.74 = 263,636.52 : x
  2. Step 2: Convert to fraction form
    478,501.44/660,328.74 = 263,636.52/x
  3. Step 3: Cross multiply
    478,501.44x = 660,328.74 × 263,636.52
  4. Step 4: Simplify right side
    478,501.44x = 174,086,771,069.59
  5. Step 5: Solve for x
    x = 174,086,771,069.59/478,501.44
  6. Step 6: Final answer
    x = 363,816.61

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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.