Home / 779,485.50-1,075,693.23-421,789.50

Finding the Fourth Proportional to 779,485.50, 1,075,693.23 and 421,789.50

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Solution

The fourth proportional to 779,485.50, 1,075,693.23 and 421,789.50 is: 582,071.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,485.50 : 1,075,693.23 = 421,789.50 : x
  2. Step 2: Convert to fraction form
    779,485.50/1,075,693.23 = 421,789.50/x
  3. Step 3: Cross multiply
    779,485.50x = 1,075,693.23 × 421,789.50
  4. Step 4: Simplify right side
    779,485.50x = 453,716,109,635.09
  5. Step 5: Solve for x
    x = 453,716,109,635.09/779,485.50
  6. Step 6: Final answer
    x = 582,071.26

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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.