Home / 685,612.76-1,028,808-370,062.68

Finding the Fourth Proportional to 685,612.76, 1,028,808 and 370,062.68

Calculator

Solution

The fourth proportional to 685,612.76, 1,028,808 and 370,062.68 is: 555,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,612.76 : 1,028,808 = 370,062.68 : x
  2. Step 2: Convert to fraction form
    685,612.76/1,028,808 = 370,062.68/x
  3. Step 3: Cross multiply
    685,612.76x = 1,028,808 × 370,062.68
  4. Step 4: Simplify right side
    685,612.76x = 380,723,445,685.44
  5. Step 5: Solve for x
    x = 380,723,445,685.44/685,612.76
  6. Step 6: Final answer
    x = 555,303.91

Related Problems

Find fourth proportional to 342,806.38, 514,404 and 185,031.34
Half scale
Find fourth proportional to 1,371,225.52, 2,057,616 and 740,125.36
Double scale
Find fourth proportional to 685,613.76, 1,028,809.50 and 370,063.68
Similar ratio
Find fourth proportional to 1,028,419.14, 1,543,212 and 555,094.02
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.