Home / 779,552.25-1,075,782.12-421,856.25

Finding the Fourth Proportional to 779,552.25, 1,075,782.12 and 421,856.25

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Solution

The fourth proportional to 779,552.25, 1,075,782.12 and 421,856.25 is: 582,161.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,552.25 : 1,075,782.12 = 421,856.25 : x
  2. Step 2: Convert to fraction form
    779,552.25/1,075,782.12 = 421,856.25/x
  3. Step 3: Cross multiply
    779,552.25x = 1,075,782.12 × 421,856.25
  4. Step 4: Simplify right side
    779,552.25x = 453,825,410,960.25
  5. Step 5: Solve for x
    x = 453,825,410,960.25/779,552.25
  6. Step 6: Final answer
    x = 582,161.63

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Double scale
Find fourth proportional to 779,553.25, 1,075,783.50 and 421,857.25
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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.