Home / 870,840-1,280,653.50

Finding the Third Proportional to 870,840 and 1,280,653.50

Calculator

Solution

The third proportional to 870,840 and 1,280,653.50 is: 1,883,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,840 : 1,280,653.50 = 1,280,653.50 : x
  2. Step 2: Convert to fraction form
    870,840/1,280,653.50 = 1,280,653.50/x
  3. Step 3: Cross multiply
    870,840x = 1,280,653.50 × 1,280,653.50
  4. Step 4: Simplify right side
    870,840x = 1,640,073,387,062.25
  5. Step 5: Solve for x
    x = 1,640,073,387,062.25/870,840
  6. Step 6: Final answer
    x = 1,883,323.44

Related Problems

Find third proportional to 435,420 and 640,326.75
Half scale
Find third proportional to 1,741,680 and 2,561,307
Double scale
Find third proportional to 870,842 and 1,280,656
Similar ratio
Find third proportional to 1,306,260 and 1,920,980.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.