Home / 920,768.80-1,270,857-618,787.84

Finding the Fourth Proportional to 920,768.80, 1,270,857 and 618,787.84

Calculator

Solution

The fourth proportional to 920,768.80, 1,270,857 and 618,787.84 is: 854,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,768.80 : 1,270,857 = 618,787.84 : x
  2. Step 2: Convert to fraction form
    920,768.80/1,270,857 = 618,787.84/x
  3. Step 3: Cross multiply
    920,768.80x = 1,270,857 × 618,787.84
  4. Step 4: Simplify right side
    920,768.80x = 786,390,857,978.88
  5. Step 5: Solve for x
    x = 786,390,857,978.88/920,768.80
  6. Step 6: Final answer
    x = 854,058.98

Related Problems

Find fourth proportional to 460,384.40, 635,428.50 and 309,393.92
Half scale
Find fourth proportional to 1,841,537.60, 2,541,714 and 1,237,575.68
Double scale
Find fourth proportional to 920,769.80, 1,270,858.38 and 618,788.84
Similar ratio
Find fourth proportional to 1,381,153.20, 1,906,285.50 and 928,181.76
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.