Home / 1,189,220.51-1,641,125.36-645,356.30

Finding the Fourth Proportional to 1,189,220.51, 1,641,125.36 and 645,356.30

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Solution

The fourth proportional to 1,189,220.51, 1,641,125.36 and 645,356.30 is: 890,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,220.51 : 1,641,125.36 = 645,356.30 : x
  2. Step 2: Convert to fraction form
    1,189,220.51/1,641,125.36 = 645,356.30/x
  3. Step 3: Cross multiply
    1,189,220.51x = 1,641,125.36 × 645,356.30
  4. Step 4: Simplify right side
    1,189,220.51x = 1,059,110,578,733.36
  5. Step 5: Solve for x
    x = 1,059,110,578,733.36/1,189,220.51
  6. Step 6: Final answer
    x = 890,592.26

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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.