Home / 788,712.40-1,183,846.20-389,803.60

Finding the Fourth Proportional to 788,712.40, 1,183,846.20 and 389,803.60

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Solution

The fourth proportional to 788,712.40, 1,183,846.20 and 389,803.60 is: 585,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,712.40 : 1,183,846.20 = 389,803.60 : x
  2. Step 2: Convert to fraction form
    788,712.40/1,183,846.20 = 389,803.60/x
  3. Step 3: Cross multiply
    788,712.40x = 1,183,846.20 × 389,803.60
  4. Step 4: Simplify right side
    788,712.40x = 461,467,510,606.32
  5. Step 5: Solve for x
    x = 461,467,510,606.32/788,712.40
  6. Step 6: Final answer
    x = 585,089.71

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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.