Home / 1,419,088.60-2,128,632.90-421,816.60

Finding the Fourth Proportional to 1,419,088.60, 2,128,632.90 and 421,816.60

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Solution

The fourth proportional to 1,419,088.60, 2,128,632.90 and 421,816.60 is: 632,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,088.60 : 2,128,632.90 = 421,816.60 : x
  2. Step 2: Convert to fraction form
    1,419,088.60/2,128,632.90 = 421,816.60/x
  3. Step 3: Cross multiply
    1,419,088.60x = 2,128,632.90 × 421,816.60
  4. Step 4: Simplify right side
    1,419,088.60x = 897,892,692,526.14
  5. Step 5: Solve for x
    x = 897,892,692,526.14/1,419,088.60
  6. Step 6: Final answer
    x = 632,724.90

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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.