Home / 387,280-838,896

Finding the Third Proportional to 387,280 and 838,896

Calculator

Solution

The third proportional to 387,280 and 838,896 is: 1,817,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,280 : 838,896 = 838,896 : x
  2. Step 2: Convert to fraction form
    387,280/838,896 = 838,896/x
  3. Step 3: Cross multiply
    387,280x = 838,896 × 838,896
  4. Step 4: Simplify right side
    387,280x = 703,746,498,816
  5. Step 5: Solve for x
    x = 703,746,498,816/387,280
  6. Step 6: Final answer
    x = 1,817,151.67

Related Problems

Find third proportional to 193,640 and 419,448
Half scale
Find third proportional to 774,560 and 1,677,792
Double scale
Find third proportional to 387,282 and 838,900
Similar ratio
Find third proportional to 580,920 and 1,258,344
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.