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Finding the Fourth Proportional to 647,573, 893,650.74 and 379,301

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Solution

The fourth proportional to 647,573, 893,650.74 and 379,301 is: 523,435.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,573 : 893,650.74 = 379,301 : x
  2. Step 2: Convert to fraction form
    647,573/893,650.74 = 379,301/x
  3. Step 3: Cross multiply
    647,573x = 893,650.74 × 379,301
  4. Step 4: Simplify right side
    647,573x = 338,962,619,332.74
  5. Step 5: Solve for x
    x = 338,962,619,332.74/647,573
  6. Step 6: Final answer
    x = 523,435.38

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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.