Home / 338,048-688,618

Finding the Third Proportional to 338,048 and 688,618

Calculator

Solution

The third proportional to 338,048 and 688,618 is: 1,402,743.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,048 : 688,618 = 688,618 : x
  2. Step 2: Convert to fraction form
    338,048/688,618 = 688,618/x
  3. Step 3: Cross multiply
    338,048x = 688,618 × 688,618
  4. Step 4: Simplify right side
    338,048x = 474,194,749,924
  5. Step 5: Solve for x
    x = 474,194,749,924/338,048
  6. Step 6: Final answer
    x = 1,402,743.84

Related Problems

Find third proportional to 169,024 and 344,309
Half scale
Find third proportional to 676,096 and 1,377,236
Double scale
Find third proportional to 338,050 and 688,622
Similar ratio
Find third proportional to 507,072 and 1,032,927
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.