Home / 693,210-1,039,815-249,978

Finding the Fourth Proportional to 693,210, 1,039,815 and 249,978

Calculator

Solution

The fourth proportional to 693,210, 1,039,815 and 249,978 is: 374,967

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,210 : 1,039,815 = 249,978 : x
  2. Step 2: Convert to fraction form
    693,210/1,039,815 = 249,978/x
  3. Step 3: Cross multiply
    693,210x = 1,039,815 × 249,978
  4. Step 4: Simplify right side
    693,210x = 259,930,874,070
  5. Step 5: Solve for x
    x = 259,930,874,070/693,210
  6. Step 6: Final answer
    x = 374,967

Related Problems

Find fourth proportional to 346,605, 519,907.50 and 124,989
Half scale
Find fourth proportional to 1,386,420, 2,079,630 and 499,956
Double scale
Find fourth proportional to 693,211, 1,039,816.50 and 249,979
Similar ratio
Find fourth proportional to 1,039,815, 1,559,722.50 and 374,967
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.