Home / 857,875.20-1,286,812.80-325,219.20

Finding the Fourth Proportional to 857,875.20, 1,286,812.80 and 325,219.20

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Solution

The fourth proportional to 857,875.20, 1,286,812.80 and 325,219.20 is: 487,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,875.20 : 1,286,812.80 = 325,219.20 : x
  2. Step 2: Convert to fraction form
    857,875.20/1,286,812.80 = 325,219.20/x
  3. Step 3: Cross multiply
    857,875.20x = 1,286,812.80 × 325,219.20
  4. Step 4: Simplify right side
    857,875.20x = 418,496,229,365.76
  5. Step 5: Solve for x
    x = 418,496,229,365.76/857,875.20
  6. Step 6: Final answer
    x = 487,828.80

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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.