Home / 331,858,820-478,021,638

Finding the Third Proportional to 331,858,820 and 478,021,638

Calculator

Solution

The third proportional to 331,858,820 and 478,021,638 is: 688,559,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,858,820 : 478,021,638 = 478,021,638 : x
  2. Step 2: Convert to fraction form
    331,858,820/478,021,638 = 478,021,638/x
  3. Step 3: Cross multiply
    331,858,820x = 478,021,638 × 478,021,638
  4. Step 4: Simplify right side
    331,858,820x = 228,504,686,396,203,040
  5. Step 5: Solve for x
    x = 228,504,686,396,203,040/331,858,820
  6. Step 6: Final answer
    x = 688,559,931.59

Related Problems

Find third proportional to 165,929,410 and 239,010,819
Half scale
Find third proportional to 663,717,640 and 956,043,276
Double scale
Find third proportional to 331,858,822 and 478,021,641
Similar ratio
Find third proportional to 497,788,230 and 717,032,457
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.