Home / 1,189,487.60-1,641,448.88-645,611.68

Finding the Fourth Proportional to 1,189,487.60, 1,641,448.88 and 645,611.68

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Solution

The fourth proportional to 1,189,487.60, 1,641,448.88 and 645,611.68 is: 890,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,487.60 : 1,641,448.88 = 645,611.68 : x
  2. Step 2: Convert to fraction form
    1,189,487.60/1,641,448.88 = 645,611.68/x
  3. Step 3: Cross multiply
    1,189,487.60x = 1,641,448.88 × 645,611.68
  4. Step 4: Simplify right side
    1,189,487.60x = 1,059,738,569,050.92
  5. Step 5: Solve for x
    x = 1,059,738,569,050.92/1,189,487.60
  6. Step 6: Final answer
    x = 890,920.23

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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.