Home / 1,336,921.92-2,005,185.60-390,038.40

Finding the Fourth Proportional to 1,336,921.92, 2,005,185.60 and 390,038.40

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Solution

The fourth proportional to 1,336,921.92, 2,005,185.60 and 390,038.40 is: 585,000.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,921.92 : 2,005,185.60 = 390,038.40 : x
  2. Step 2: Convert to fraction form
    1,336,921.92/2,005,185.60 = 390,038.40/x
  3. Step 3: Cross multiply
    1,336,921.92x = 2,005,185.60 × 390,038.40
  4. Step 4: Simplify right side
    1,336,921.92x = 782,099,383,127.04
  5. Step 5: Solve for x
    x = 782,099,383,127.04/1,336,921.92
  6. Step 6: Final answer
    x = 585,000.04

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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.