Home / 871,973.60-1,203,183.60-489,999.20

Finding the Fourth Proportional to 871,973.60, 1,203,183.60 and 489,999.20

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Solution

The fourth proportional to 871,973.60, 1,203,183.60 and 489,999.20 is: 676,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,973.60 : 1,203,183.60 = 489,999.20 : x
  2. Step 2: Convert to fraction form
    871,973.60/1,203,183.60 = 489,999.20/x
  3. Step 3: Cross multiply
    871,973.60x = 1,203,183.60 × 489,999.20
  4. Step 4: Simplify right side
    871,973.60x = 589,559,001,453.12
  5. Step 5: Solve for x
    x = 589,559,001,453.12/871,973.60
  6. Step 6: Final answer
    x = 676,120.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.