Home / 919,003.70-1,378,506.36-287,966.72

Finding the Fourth Proportional to 919,003.70, 1,378,506.36 and 287,966.72

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Solution

The fourth proportional to 919,003.70, 1,378,506.36 and 287,966.72 is: 431,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,003.70 : 1,378,506.36 = 287,966.72 : x
  2. Step 2: Convert to fraction form
    919,003.70/1,378,506.36 = 287,966.72/x
  3. Step 3: Cross multiply
    919,003.70x = 1,378,506.36 × 287,966.72
  4. Step 4: Simplify right side
    919,003.70x = 396,963,954,988.34
  5. Step 5: Solve for x
    x = 396,963,954,988.34/919,003.70
  6. Step 6: Final answer
    x = 431,950.33

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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.