Home / 1,189,503.23-1,641,516.12-645,639.13

Finding the Fourth Proportional to 1,189,503.23, 1,641,516.12 and 645,639.13

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Solution

The fourth proportional to 1,189,503.23, 1,641,516.12 and 645,639.13 is: 890,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,503.23 : 1,641,516.12 = 645,639.13 : x
  2. Step 2: Convert to fraction form
    1,189,503.23/1,641,516.12 = 645,639.13/x
  3. Step 3: Cross multiply
    1,189,503.23x = 1,641,516.12 × 645,639.13
  4. Step 4: Simplify right side
    1,189,503.23x = 1,059,827,039,597.78
  5. Step 5: Solve for x
    x = 1,059,827,039,597.78/1,189,503.23
  6. Step 6: Final answer
    x = 890,982.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.