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Finding the Fourth Proportional to 478,279.44, 660,012.12 and 260,483.18

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Solution

The fourth proportional to 478,279.44, 660,012.12 and 260,483.18 is: 359,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,279.44 : 660,012.12 = 260,483.18 : x
  2. Step 2: Convert to fraction form
    478,279.44/660,012.12 = 260,483.18/x
  3. Step 3: Cross multiply
    478,279.44x = 660,012.12 × 260,483.18
  4. Step 4: Simplify right side
    478,279.44x = 171,922,052,556.08
  5. Step 5: Solve for x
    x = 171,922,052,556.08/478,279.44
  6. Step 6: Final answer
    x = 359,459.43

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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.