Home / 520,060-780,090-126,076

Finding the Fourth Proportional to 520,060, 780,090 and 126,076

Calculator

Solution

The fourth proportional to 520,060, 780,090 and 126,076 is: 189,114

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,060 : 780,090 = 126,076 : x
  2. Step 2: Convert to fraction form
    520,060/780,090 = 126,076/x
  3. Step 3: Cross multiply
    520,060x = 780,090 × 126,076
  4. Step 4: Simplify right side
    520,060x = 98,350,626,840
  5. Step 5: Solve for x
    x = 98,350,626,840/520,060
  6. Step 6: Final answer
    x = 189,114

Related Problems

Find fourth proportional to 260,030, 390,045 and 63,038
Half scale
Find fourth proportional to 1,040,120, 1,560,180 and 252,152
Double scale
Find fourth proportional to 520,061, 780,091.50 and 126,077
Similar ratio
Find fourth proportional to 780,090, 1,170,135 and 189,114
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.