Home / 258,897-578,058

Finding the Third Proportional to 258,897 and 578,058

Calculator

Solution

The third proportional to 258,897 and 578,058 is: 1,290,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,897 : 578,058 = 578,058 : x
  2. Step 2: Convert to fraction form
    258,897/578,058 = 578,058/x
  3. Step 3: Cross multiply
    258,897x = 578,058 × 578,058
  4. Step 4: Simplify right side
    258,897x = 334,151,051,364
  5. Step 5: Solve for x
    x = 334,151,051,364/258,897
  6. Step 6: Final answer
    x = 1,290,671.78

Related Problems

Find third proportional to 129,448.50 and 289,029
Half scale
Find third proportional to 517,794 and 1,156,116
Double scale
Find third proportional to 258,899 and 578,062
Similar ratio
Find third proportional to 388,345.50 and 867,087
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.