Home / 1,189,478.25-1,641,436.01-645,602.35

Finding the Fourth Proportional to 1,189,478.25, 1,641,436.01 and 645,602.35

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Solution

The fourth proportional to 1,189,478.25, 1,641,436.01 and 645,602.35 is: 890,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,478.25 : 1,641,436.01 = 645,602.35 : x
  2. Step 2: Convert to fraction form
    1,189,478.25/1,641,436.01 = 645,602.35/x
  3. Step 3: Cross multiply
    1,189,478.25x = 1,641,436.01 × 645,602.35
  4. Step 4: Simplify right side
    1,189,478.25x = 1,059,714,945,430.62
  5. Step 5: Solve for x
    x = 1,059,714,945,430.62/1,189,478.25
  6. Step 6: Final answer
    x = 890,907.38

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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.