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Finding the Fourth Proportional to 687,971.70, 949,850.60 and 446,941.22

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Solution

The fourth proportional to 687,971.70, 949,850.60 and 446,941.22 is: 617,070.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,971.70 : 949,850.60 = 446,941.22 : x
  2. Step 2: Convert to fraction form
    687,971.70/949,850.60 = 446,941.22/x
  3. Step 3: Cross multiply
    687,971.70x = 949,850.60 × 446,941.22
  4. Step 4: Simplify right side
    687,971.70x = 424,527,378,997.77
  5. Step 5: Solve for x
    x = 424,527,378,997.77/687,971.70
  6. Step 6: Final answer
    x = 617,070.99

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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.