Home / 12,955,819.20-19,433,728.80-3,980,817.60

Finding the Fourth Proportional to 12,955,819.20, 19,433,728.80 and 3,980,817.60

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Solution

The fourth proportional to 12,955,819.20, 19,433,728.80 and 3,980,817.60 is: 5,971,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955,819.20 : 19,433,728.80 = 3,980,817.60 : x
  2. Step 2: Convert to fraction form
    12,955,819.20/19,433,728.80 = 3,980,817.60/x
  3. Step 3: Cross multiply
    12,955,819.20x = 19,433,728.80 × 3,980,817.60
  4. Step 4: Simplify right side
    12,955,819.20x = 77,362,129,640,666.89
  5. Step 5: Solve for x
    x = 77,362,129,640,666.89/12,955,819.20
  6. Step 6: Final answer
    x = 5,971,226.40

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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.