Home / 1,189,833.32-1,641,969.96-645,969.08

Finding the Fourth Proportional to 1,189,833.32, 1,641,969.96 and 645,969.08

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Solution

The fourth proportional to 1,189,833.32, 1,641,969.96 and 645,969.08 is: 891,437.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,833.32 : 1,641,969.96 = 645,969.08 : x
  2. Step 2: Convert to fraction form
    1,189,833.32/1,641,969.96 = 645,969.08/x
  3. Step 3: Cross multiply
    1,189,833.32x = 1,641,969.96 × 645,969.08
  4. Step 4: Simplify right side
    1,189,833.32x = 1,060,661,824,448.84
  5. Step 5: Solve for x
    x = 1,060,661,824,448.84/1,189,833.32
  6. Step 6: Final answer
    x = 891,437.32

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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.