Home / 1,336,730.20-2,005,386.90-390,023.80

Finding the Fourth Proportional to 1,336,730.20, 2,005,386.90 and 390,023.80

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Solution

The fourth proportional to 1,336,730.20, 2,005,386.90 and 390,023.80 is: 585,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,730.20 : 2,005,386.90 = 390,023.80 : x
  2. Step 2: Convert to fraction form
    1,336,730.20/2,005,386.90 = 390,023.80/x
  3. Step 3: Cross multiply
    1,336,730.20x = 2,005,386.90 × 390,023.80
  4. Step 4: Simplify right side
    1,336,730.20x = 782,148,619,208.22
  5. Step 5: Solve for x
    x = 782,148,619,208.22/1,336,730.20
  6. Step 6: Final answer
    x = 585,120.78

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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.