Home / 1,306,624-1,959,936-420,160

Finding the Fourth Proportional to 1,306,624, 1,959,936 and 420,160

Calculator

Solution

The fourth proportional to 1,306,624, 1,959,936 and 420,160 is: 630,240

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,624 : 1,959,936 = 420,160 : x
  2. Step 2: Convert to fraction form
    1,306,624/1,959,936 = 420,160/x
  3. Step 3: Cross multiply
    1,306,624x = 1,959,936 × 420,160
  4. Step 4: Simplify right side
    1,306,624x = 823,486,709,760
  5. Step 5: Solve for x
    x = 823,486,709,760/1,306,624
  6. Step 6: Final answer
    x = 630,240

Related Problems

Find fourth proportional to 653,312, 979,968 and 210,080
Half scale
Find fourth proportional to 2,613,248, 3,919,872 and 840,320
Double scale
Find fourth proportional to 1,306,625, 1,959,937.50 and 420,161
Similar ratio
Find fourth proportional to 1,959,936, 2,939,904 and 630,240
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.