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Finding the Fourth Proportional to 706,271.21, 974,649.43 and 383,981.30

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Solution

The fourth proportional to 706,271.21, 974,649.43 and 383,981.30 is: 529,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,271.21 : 974,649.43 = 383,981.30 : x
  2. Step 2: Convert to fraction form
    706,271.21/974,649.43 = 383,981.30/x
  3. Step 3: Cross multiply
    706,271.21x = 974,649.43 × 383,981.30
  4. Step 4: Simplify right side
    706,271.21x = 374,247,155,175.66
  5. Step 5: Solve for x
    x = 374,247,155,175.66/706,271.21
  6. Step 6: Final answer
    x = 529,891.56

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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.