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Finding the Fourth Proportional to 779,640.52, 1,075,904 and 421,944.52

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Solution

The fourth proportional to 779,640.52, 1,075,904 and 421,944.52 is: 582,283.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,640.52 : 1,075,904 = 421,944.52 : x
  2. Step 2: Convert to fraction form
    779,640.52/1,075,904 = 421,944.52/x
  3. Step 3: Cross multiply
    779,640.52x = 1,075,904 × 421,944.52
  4. Step 4: Simplify right side
    779,640.52x = 453,971,796,846.08
  5. Step 5: Solve for x
    x = 453,971,796,846.08/779,640.52
  6. Step 6: Final answer
    x = 582,283.48

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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.