Home / 415,370-645,087

Finding the Third Proportional to 415,370 and 645,087

Calculator

Solution

The third proportional to 415,370 and 645,087 is: 1,001,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,370 : 645,087 = 645,087 : x
  2. Step 2: Convert to fraction form
    415,370/645,087 = 645,087/x
  3. Step 3: Cross multiply
    415,370x = 645,087 × 645,087
  4. Step 4: Simplify right side
    415,370x = 416,137,237,569
  5. Step 5: Solve for x
    x = 416,137,237,569/415,370
  6. Step 6: Final answer
    x = 1,001,847.12

Related Problems

Find third proportional to 207,685 and 322,543.50
Half scale
Find third proportional to 830,740 and 1,290,174
Double scale
Find third proportional to 415,372 and 645,090
Similar ratio
Find third proportional to 623,055 and 967,630.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.