Home / 1,419,000.40-2,128,500.60-421,728.40

Finding the Fourth Proportional to 1,419,000.40, 2,128,500.60 and 421,728.40

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Solution

The fourth proportional to 1,419,000.40, 2,128,500.60 and 421,728.40 is: 632,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,000.40 : 2,128,500.60 = 421,728.40 : x
  2. Step 2: Convert to fraction form
    1,419,000.40/2,128,500.60 = 421,728.40/x
  3. Step 3: Cross multiply
    1,419,000.40x = 2,128,500.60 × 421,728.40
  4. Step 4: Simplify right side
    1,419,000.40x = 897,649,152,437.04
  5. Step 5: Solve for x
    x = 897,649,152,437.04/1,419,000.40
  6. Step 6: Final answer
    x = 632,592.60

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Similar ratio
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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.