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Finding the Fourth Proportional to 386,903.75, 577,213.85 and 365,977.67

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Solution

The fourth proportional to 386,903.75, 577,213.85 and 365,977.67 is: 545,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,903.75 : 577,213.85 = 365,977.67 : x
  2. Step 2: Convert to fraction form
    386,903.75/577,213.85 = 365,977.67/x
  3. Step 3: Cross multiply
    386,903.75x = 577,213.85 × 365,977.67
  4. Step 4: Simplify right side
    386,903.75x = 211,247,377,943.60
  5. Step 5: Solve for x
    x = 211,247,377,943.60/386,903.75
  6. Step 6: Final answer
    x = 545,994.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.