Home / 1,189,623.36-1,641,636-680,312.64

Finding the Fourth Proportional to 1,189,623.36, 1,641,636 and 680,312.64

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Solution

The fourth proportional to 1,189,623.36, 1,641,636 and 680,312.64 is: 938,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,623.36 : 1,641,636 = 680,312.64 : x
  2. Step 2: Convert to fraction form
    1,189,623.36/1,641,636 = 680,312.64/x
  3. Step 3: Cross multiply
    1,189,623.36x = 1,641,636 × 680,312.64
  4. Step 4: Simplify right side
    1,189,623.36x = 1,116,825,721,079.04
  5. Step 5: Solve for x
    x = 1,116,825,721,079.04/1,189,623.36
  6. Step 6: Final answer
    x = 938,806.15

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1.5x scale

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.