Home / 779,611.38-1,075,863.70-421,915.38

Finding the Fourth Proportional to 779,611.38, 1,075,863.70 and 421,915.38

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Solution

The fourth proportional to 779,611.38, 1,075,863.70 and 421,915.38 is: 582,243.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,611.38 : 1,075,863.70 = 421,915.38 : x
  2. Step 2: Convert to fraction form
    779,611.38/1,075,863.70 = 421,915.38/x
  3. Step 3: Cross multiply
    779,611.38x = 1,075,863.70 × 421,915.38
  4. Step 4: Simplify right side
    779,611.38x = 453,923,441,813.71
  5. Step 5: Solve for x
    x = 453,923,441,813.71/779,611.38
  6. Step 6: Final answer
    x = 582,243.22

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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.