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Finding the Fourth Proportional to 660,492.60, 990,066.40 and 260,584.44

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Solution

The fourth proportional to 660,492.60, 990,066.40 and 260,584.44 is: 390,611.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,492.60 : 990,066.40 = 260,584.44 : x
  2. Step 2: Convert to fraction form
    660,492.60/990,066.40 = 260,584.44/x
  3. Step 3: Cross multiply
    660,492.60x = 990,066.40 × 260,584.44
  4. Step 4: Simplify right side
    660,492.60x = 257,995,898,406.82
  5. Step 5: Solve for x
    x = 257,995,898,406.82/660,492.60
  6. Step 6: Final answer
    x = 390,611.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.