Home / 926,621.40-1,388,765.70-821,645.40

Finding the Fourth Proportional to 926,621.40, 1,388,765.70 and 821,645.40

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Solution

The fourth proportional to 926,621.40, 1,388,765.70 and 821,645.40 is: 1,231,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,621.40 : 1,388,765.70 = 821,645.40 : x
  2. Step 2: Convert to fraction form
    926,621.40/1,388,765.70 = 821,645.40/x
  3. Step 3: Cross multiply
    926,621.40x = 1,388,765.70 × 821,645.40
  4. Step 4: Simplify right side
    926,621.40x = 1,141,072,949,082.78
  5. Step 5: Solve for x
    x = 1,141,072,949,082.78/926,621.40
  6. Step 6: Final answer
    x = 1,231,433.84

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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.