Home / 1,189,478.75-1,641,436.70-645,602.85

Finding the Fourth Proportional to 1,189,478.75, 1,641,436.70 and 645,602.85

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Solution

The fourth proportional to 1,189,478.75, 1,641,436.70 and 645,602.85 is: 890,908.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,478.75 : 1,641,436.70 = 645,602.85 : x
  2. Step 2: Convert to fraction form
    1,189,478.75/1,641,436.70 = 645,602.85/x
  3. Step 3: Cross multiply
    1,189,478.75x = 1,641,436.70 × 645,602.85
  4. Step 4: Simplify right side
    1,189,478.75x = 1,059,716,211,614.60
  5. Step 5: Solve for x
    x = 1,059,716,211,614.60/1,189,478.75
  6. Step 6: Final answer
    x = 890,908.07

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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.