Home / 779,513.06-1,075,731.27-421,817.06

Finding the Fourth Proportional to 779,513.06, 1,075,731.27 and 421,817.06

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Solution

The fourth proportional to 779,513.06, 1,075,731.27 and 421,817.06 is: 582,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,513.06 : 1,075,731.27 = 421,817.06 : x
  2. Step 2: Convert to fraction form
    779,513.06/1,075,731.27 = 421,817.06/x
  3. Step 3: Cross multiply
    779,513.06x = 1,075,731.27 × 421,817.06
  4. Step 4: Simplify right side
    779,513.06x = 453,761,802,768.98
  5. Step 5: Solve for x
    x = 453,761,802,768.98/779,513.06
  6. Step 6: Final answer
    x = 582,109.30

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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.