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Finding the Fourth Proportional to 478,613.64, 660,478.35 and 260,824.26

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Solution

The fourth proportional to 478,613.64, 660,478.35 and 260,824.26 is: 359,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,613.64 : 660,478.35 = 260,824.26 : x
  2. Step 2: Convert to fraction form
    478,613.64/660,478.35 = 260,824.26/x
  3. Step 3: Cross multiply
    478,613.64x = 660,478.35 × 260,824.26
  4. Step 4: Simplify right side
    478,613.64x = 172,268,776,884.77
  5. Step 5: Solve for x
    x = 172,268,776,884.77/478,613.64
  6. Step 6: Final answer
    x = 359,932.86

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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.