Home / 319,152-485,640

Finding the Third Proportional to 319,152 and 485,640

Calculator

Solution

The third proportional to 319,152 and 485,640 is: 738,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,152 : 485,640 = 485,640 : x
  2. Step 2: Convert to fraction form
    319,152/485,640 = 485,640/x
  3. Step 3: Cross multiply
    319,152x = 485,640 × 485,640
  4. Step 4: Simplify right side
    319,152x = 235,846,209,600
  5. Step 5: Solve for x
    x = 235,846,209,600/319,152
  6. Step 6: Final answer
    x = 738,977.70

Related Problems

Find third proportional to 159,576 and 242,820
Half scale
Find third proportional to 638,304 and 971,280
Double scale
Find third proportional to 319,154 and 485,643
Similar ratio
Find third proportional to 478,728 and 728,460
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.