Home / 370,939,467.20-556,409,200.80-128,626,865.60

Finding the Fourth Proportional to 370,939,467.20, 556,409,200.80 and 128,626,865.60

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Solution

The fourth proportional to 370,939,467.20, 556,409,200.80 and 128,626,865.60 is: 192,940,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,939,467.20 : 556,409,200.80 = 128,626,865.60 : x
  2. Step 2: Convert to fraction form
    370,939,467.20/556,409,200.80 = 128,626,865.60/x
  3. Step 3: Cross multiply
    370,939,467.20x = 556,409,200.80 × 128,626,865.60
  4. Step 4: Simplify right side
    370,939,467.20x = 71,569,171,489,905,000
  5. Step 5: Solve for x
    x = 71,569,171,489,905,000/370,939,467.20
  6. Step 6: Final answer
    x = 192,940,298.40

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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.