Home / 1,189,224.21-1,641,130.47-645,360

Finding the Fourth Proportional to 1,189,224.21, 1,641,130.47 and 645,360

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Solution

The fourth proportional to 1,189,224.21, 1,641,130.47 and 645,360 is: 890,597.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,224.21 : 1,641,130.47 = 645,360 : x
  2. Step 2: Convert to fraction form
    1,189,224.21/1,641,130.47 = 645,360/x
  3. Step 3: Cross multiply
    1,189,224.21x = 1,641,130.47 × 645,360
  4. Step 4: Simplify right side
    1,189,224.21x = 1,059,119,956,892.40
  5. Step 5: Solve for x
    x = 1,059,119,956,892.40/1,189,224.21
  6. Step 6: Final answer
    x = 890,597.37

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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.