Home / 1,189,190.48-1,641,074.28-645,312.56

Finding the Fourth Proportional to 1,189,190.48, 1,641,074.28 and 645,312.56

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Solution

The fourth proportional to 1,189,190.48, 1,641,074.28 and 645,312.56 is: 890,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,190.48 : 1,641,074.28 = 645,312.56 : x
  2. Step 2: Convert to fraction form
    1,189,190.48/1,641,074.28 = 645,312.56/x
  3. Step 3: Cross multiply
    1,189,190.48x = 1,641,074.28 × 645,312.56
  4. Step 4: Simplify right side
    1,189,190.48x = 1,059,005,844,776.96
  5. Step 5: Solve for x
    x = 1,059,005,844,776.96/1,189,190.48
  6. Step 6: Final answer
    x = 890,526.68

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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.