Home / 721,389.04-1,082,922.16-422,084.40

Finding the Fourth Proportional to 721,389.04, 1,082,922.16 and 422,084.40

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Solution

The fourth proportional to 721,389.04, 1,082,922.16 and 422,084.40 is: 633,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,389.04 : 1,082,922.16 = 422,084.40 : x
  2. Step 2: Convert to fraction form
    721,389.04/1,082,922.16 = 422,084.40/x
  3. Step 3: Cross multiply
    721,389.04x = 1,082,922.16 × 422,084.40
  4. Step 4: Simplify right side
    721,389.04x = 457,084,550,150.30
  5. Step 5: Solve for x
    x = 457,084,550,150.30/721,389.04
  6. Step 6: Final answer
    x = 633,617.26

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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.