Home / 1,389,340-1,917,289.20-753,436

Finding the Fourth Proportional to 1,389,340, 1,917,289.20 and 753,436

Calculator

Solution

The fourth proportional to 1,389,340, 1,917,289.20 and 753,436 is: 1,039,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,340 : 1,917,289.20 = 753,436 : x
  2. Step 2: Convert to fraction form
    1,389,340/1,917,289.20 = 753,436/x
  3. Step 3: Cross multiply
    1,389,340x = 1,917,289.20 × 753,436
  4. Step 4: Simplify right side
    1,389,340x = 1,444,554,705,691.20
  5. Step 5: Solve for x
    x = 1,444,554,705,691.20/1,389,340
  6. Step 6: Final answer
    x = 1,039,741.68

Related Problems

Find fourth proportional to 694,670, 958,644.60 and 376,718
Half scale
Find fourth proportional to 2,778,680, 3,834,578.40 and 1,506,872
Double scale
Find fourth proportional to 1,389,341, 1,917,290.58 and 753,437
Similar ratio
Find fourth proportional to 2,084,010, 2,875,933.80 and 1,130,154
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.