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Finding the Fourth Proportional to 561,525.58, 774,958.71 and 306,915.04

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Solution

The fourth proportional to 561,525.58, 774,958.71 and 306,915.04 is: 423,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,525.58 : 774,958.71 = 306,915.04 : x
  2. Step 2: Convert to fraction form
    561,525.58/774,958.71 = 306,915.04/x
  3. Step 3: Cross multiply
    561,525.58x = 774,958.71 × 306,915.04
  4. Step 4: Simplify right side
    561,525.58x = 237,846,483,478.00
  5. Step 5: Solve for x
    x = 237,846,483,478.00/561,525.58
  6. Step 6: Final answer
    x = 423,571.95

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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.