Home / 517,888-787,640

Finding the Third Proportional to 517,888 and 787,640

Calculator

Solution

The third proportional to 517,888 and 787,640 is: 1,197,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,888 : 787,640 = 787,640 : x
  2. Step 2: Convert to fraction form
    517,888/787,640 = 787,640/x
  3. Step 3: Cross multiply
    517,888x = 787,640 × 787,640
  4. Step 4: Simplify right side
    517,888x = 620,376,769,600
  5. Step 5: Solve for x
    x = 620,376,769,600/517,888
  6. Step 6: Final answer
    x = 1,197,897.56

Related Problems

Find third proportional to 258,944 and 393,820
Half scale
Find third proportional to 1,035,776 and 1,575,280
Double scale
Find third proportional to 517,890 and 787,643
Similar ratio
Find third proportional to 776,832 and 1,181,460
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.