Home / 1,220,820.40-1,830,793.20-621,582.40

Finding the Fourth Proportional to 1,220,820.40, 1,830,793.20 and 621,582.40

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Solution

The fourth proportional to 1,220,820.40, 1,830,793.20 and 621,582.40 is: 932,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,820.40 : 1,830,793.20 = 621,582.40 : x
  2. Step 2: Convert to fraction form
    1,220,820.40/1,830,793.20 = 621,582.40/x
  3. Step 3: Cross multiply
    1,220,820.40x = 1,830,793.20 × 621,582.40
  4. Step 4: Simplify right side
    1,220,820.40x = 1,137,988,831,159.68
  5. Step 5: Solve for x
    x = 1,137,988,831,159.68/1,220,820.40
  6. Step 6: Final answer
    x = 932,150.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.