Home / 5,128,990.40-7,693,485.60-4,910,571.20

Finding the Fourth Proportional to 5,128,990.40, 7,693,485.60 and 4,910,571.20

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Solution

The fourth proportional to 5,128,990.40, 7,693,485.60 and 4,910,571.20 is: 7,365,856.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,990.40 : 7,693,485.60 = 4,910,571.20 : x
  2. Step 2: Convert to fraction form
    5,128,990.40/7,693,485.60 = 4,910,571.20/x
  3. Step 3: Cross multiply
    5,128,990.40x = 7,693,485.60 × 4,910,571.20
  4. Step 4: Simplify right side
    5,128,990.40x = 37,779,408,814,974.72
  5. Step 5: Solve for x
    x = 37,779,408,814,974.72/5,128,990.40
  6. Step 6: Final answer
    x = 7,365,856.80

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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.