Home / 1,279,723.96-1,919,688-438,283

Finding the Fourth Proportional to 1,279,723.96, 1,919,688 and 438,283

Calculator

Solution

The fourth proportional to 1,279,723.96, 1,919,688 and 438,283 is: 657,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,723.96 : 1,919,688 = 438,283 : x
  2. Step 2: Convert to fraction form
    1,279,723.96/1,919,688 = 438,283/x
  3. Step 3: Cross multiply
    1,279,723.96x = 1,919,688 × 438,283
  4. Step 4: Simplify right side
    1,279,723.96x = 841,366,615,704
  5. Step 5: Solve for x
    x = 841,366,615,704/1,279,723.96
  6. Step 6: Final answer
    x = 657,459.45

Related Problems

Find fourth proportional to 639,861.98, 959,844 and 219,141.50
Half scale
Find fourth proportional to 2,559,447.92, 3,839,376 and 876,566
Double scale
Find fourth proportional to 1,279,724.96, 1,919,689.50 and 438,284
Similar ratio
Find fourth proportional to 1,919,585.94, 2,879,532 and 657,424.50
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.