Home / 355,840-781,664

Finding the Third Proportional to 355,840 and 781,664

Calculator

Solution

The third proportional to 355,840 and 781,664 is: 1,717,059.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,840 : 781,664 = 781,664 : x
  2. Step 2: Convert to fraction form
    355,840/781,664 = 781,664/x
  3. Step 3: Cross multiply
    355,840x = 781,664 × 781,664
  4. Step 4: Simplify right side
    355,840x = 610,998,608,896
  5. Step 5: Solve for x
    x = 610,998,608,896/355,840
  6. Step 6: Final answer
    x = 1,717,059.94

Related Problems

Find third proportional to 177,920 and 390,832
Half scale
Find third proportional to 711,680 and 1,563,328
Double scale
Find third proportional to 355,842 and 781,668
Similar ratio
Find third proportional to 533,760 and 1,172,496
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.