Home / 691,964.63-1,038,409.91-287,156.82

Finding the Fourth Proportional to 691,964.63, 1,038,409.91 and 287,156.82

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Solution

The fourth proportional to 691,964.63, 1,038,409.91 and 287,156.82 is: 430,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,964.63 : 1,038,409.91 = 287,156.82 : x
  2. Step 2: Convert to fraction form
    691,964.63/1,038,409.91 = 287,156.82/x
  3. Step 3: Cross multiply
    691,964.63x = 1,038,409.91 × 287,156.82
  4. Step 4: Simplify right side
    691,964.63x = 298,186,491,685.60
  5. Step 5: Solve for x
    x = 298,186,491,685.60/691,964.63
  6. Step 6: Final answer
    x = 430,927.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.