Home / 278,572-424,386

Finding the Third Proportional to 278,572 and 424,386

Calculator

Solution

The third proportional to 278,572 and 424,386 is: 646,523.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,572 : 424,386 = 424,386 : x
  2. Step 2: Convert to fraction form
    278,572/424,386 = 424,386/x
  3. Step 3: Cross multiply
    278,572x = 424,386 × 424,386
  4. Step 4: Simplify right side
    278,572x = 180,103,476,996
  5. Step 5: Solve for x
    x = 180,103,476,996/278,572
  6. Step 6: Final answer
    x = 646,523.98

Related Problems

Find third proportional to 139,286 and 212,193
Half scale
Find third proportional to 557,144 and 848,772
Double scale
Find third proportional to 278,574 and 424,389
Similar ratio
Find third proportional to 417,858 and 636,579
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.