Home / 887,906.40-1,331,859.60-389,270.40

Finding the Fourth Proportional to 887,906.40, 1,331,859.60 and 389,270.40

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Solution

The fourth proportional to 887,906.40, 1,331,859.60 and 389,270.40 is: 583,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,906.40 : 1,331,859.60 = 389,270.40 : x
  2. Step 2: Convert to fraction form
    887,906.40/1,331,859.60 = 389,270.40/x
  3. Step 3: Cross multiply
    887,906.40x = 1,331,859.60 × 389,270.40
  4. Step 4: Simplify right side
    887,906.40x = 518,453,519,235.84
  5. Step 5: Solve for x
    x = 518,453,519,235.84/887,906.40
  6. Step 6: Final answer
    x = 583,905.60

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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.