Home / 1,390,222.80-2,085,334.20-443,689.20

Finding the Fourth Proportional to 1,390,222.80, 2,085,334.20 and 443,689.20

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Solution

The fourth proportional to 1,390,222.80, 2,085,334.20 and 443,689.20 is: 665,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,222.80 : 2,085,334.20 = 443,689.20 : x
  2. Step 2: Convert to fraction form
    1,390,222.80/2,085,334.20 = 443,689.20/x
  3. Step 3: Cross multiply
    1,390,222.80x = 2,085,334.20 × 443,689.20
  4. Step 4: Simplify right side
    1,390,222.80x = 925,240,262,930.64
  5. Step 5: Solve for x
    x = 925,240,262,930.64/1,390,222.80
  6. Step 6: Final answer
    x = 665,533.80

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1.5x scale

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.