Home / 919,969-1,379,953.50-255,121

Finding the Fourth Proportional to 919,969, 1,379,953.50 and 255,121

Calculator

Solution

The fourth proportional to 919,969, 1,379,953.50 and 255,121 is: 382,681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,969 : 1,379,953.50 = 255,121 : x
  2. Step 2: Convert to fraction form
    919,969/1,379,953.50 = 255,121/x
  3. Step 3: Cross multiply
    919,969x = 1,379,953.50 × 255,121
  4. Step 4: Simplify right side
    919,969x = 352,055,116,873.50
  5. Step 5: Solve for x
    x = 352,055,116,873.50/919,969
  6. Step 6: Final answer
    x = 382,681.50

Related Problems

Find fourth proportional to 459,984.50, 689,976.75 and 127,560.50
Half scale
Find fourth proportional to 1,839,938, 2,759,907 and 510,242
Double scale
Find fourth proportional to 919,970, 1,379,955 and 255,122
Similar ratio
Find fourth proportional to 1,379,953.50, 2,069,930.25 and 382,681.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.