Home / 1,189,312.69-1,641,252.37-645,448.34

Finding the Fourth Proportional to 1,189,312.69, 1,641,252.37 and 645,448.34

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Solution

The fourth proportional to 1,189,312.69, 1,641,252.37 and 645,448.34 is: 890,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,312.69 : 1,641,252.37 = 645,448.34 : x
  2. Step 2: Convert to fraction form
    1,189,312.69/1,641,252.37 = 645,448.34/x
  3. Step 3: Cross multiply
    1,189,312.69x = 1,641,252.37 × 645,448.34
  4. Step 4: Simplify right side
    1,189,312.69x = 1,059,343,606,304.06
  5. Step 5: Solve for x
    x = 1,059,343,606,304.06/1,189,312.69
  6. Step 6: Final answer
    x = 890,719.17

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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.