Home / 638,906,940-981,439,290

Finding the Third Proportional to 638,906,940 and 981,439,290

Calculator

Solution

The third proportional to 638,906,940 and 981,439,290 is: 1,507,610,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906,940 : 981,439,290 = 981,439,290 : x
  2. Step 2: Convert to fraction form
    638,906,940/981,439,290 = 981,439,290/x
  3. Step 3: Cross multiply
    638,906,940x = 981,439,290 × 981,439,290
  4. Step 4: Simplify right side
    638,906,940x = 963,223,079,955,704,064
  5. Step 5: Solve for x
    x = 963,223,079,955,704,064/638,906,940
  6. Step 6: Final answer
    x = 1,507,610,920.54

Related Problems

Find third proportional to 319,453,470 and 490,719,645
Half scale
Find third proportional to 1,277,813,880 and 1,962,878,580
Double scale
Find third proportional to 638,906,942 and 981,439,293
Similar ratio
Find third proportional to 958,360,410 and 1,472,158,935
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.