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Finding the Fourth Proportional to 660,492.54, 990,426.54 and 255,874.26

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Solution

The fourth proportional to 660,492.54, 990,426.54 and 255,874.26 is: 383,690.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,492.54 : 990,426.54 = 255,874.26 : x
  2. Step 2: Convert to fraction form
    660,492.54/990,426.54 = 255,874.26/x
  3. Step 3: Cross multiply
    660,492.54x = 990,426.54 × 255,874.26
  4. Step 4: Simplify right side
    660,492.54x = 253,424,658,006.86
  5. Step 5: Solve for x
    x = 253,424,658,006.86/660,492.54
  6. Step 6: Final answer
    x = 383,690.42

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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.