Home / 721,804.80-1,082,707.20-438,369.60

Finding the Fourth Proportional to 721,804.80, 1,082,707.20 and 438,369.60

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Solution

The fourth proportional to 721,804.80, 1,082,707.20 and 438,369.60 is: 657,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,804.80 : 1,082,707.20 = 438,369.60 : x
  2. Step 2: Convert to fraction form
    721,804.80/1,082,707.20 = 438,369.60/x
  3. Step 3: Cross multiply
    721,804.80x = 1,082,707.20 × 438,369.60
  4. Step 4: Simplify right side
    721,804.80x = 474,625,922,181.12
  5. Step 5: Solve for x
    x = 474,625,922,181.12/721,804.80
  6. Step 6: Final answer
    x = 657,554.40

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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.