Home / 706-974.28-430

Finding the Fourth Proportional to 706, 974.28 and 430

Calculator

Solution

The fourth proportional to 706, 974.28 and 430 is: 593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    706 : 974.28 = 430 : x
  2. Step 2: Convert to fraction form
    706/974.28 = 430/x
  3. Step 3: Cross multiply
    706x = 974.28 × 430
  4. Step 4: Simplify right side
    706x = 418,940.40
  5. Step 5: Solve for x
    x = 418,940.40/706
  6. Step 6: Final answer
    x = 593.40

Related Problems

Find fourth proportional to 353, 487.14 and 215
Half scale
Find fourth proportional to 1,412, 1,948.56 and 860
Double scale
Find fourth proportional to 707, 975.66 and 431
Similar ratio
Find fourth proportional to 1,059, 1,461.42 and 645
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.