Home / 739,888-1,021,045.44-421,936

Finding the Fourth Proportional to 739,888, 1,021,045.44 and 421,936

Calculator

Solution

The fourth proportional to 739,888, 1,021,045.44 and 421,936 is: 582,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,888 : 1,021,045.44 = 421,936 : x
  2. Step 2: Convert to fraction form
    739,888/1,021,045.44 = 421,936/x
  3. Step 3: Cross multiply
    739,888x = 1,021,045.44 × 421,936
  4. Step 4: Simplify right side
    739,888x = 430,815,828,771.84
  5. Step 5: Solve for x
    x = 430,815,828,771.84/739,888
  6. Step 6: Final answer
    x = 582,271.68

Related Problems

Find fourth proportional to 369,944, 510,522.72 and 210,968
Half scale
Find fourth proportional to 1,479,776, 2,042,090.88 and 843,872
Double scale
Find fourth proportional to 739,889, 1,021,046.82 and 421,937
Similar ratio
Find fourth proportional to 1,109,832, 1,531,568.16 and 632,904
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.