Home / 1,189,840.50-1,641,979.91-645,976.34

Finding the Fourth Proportional to 1,189,840.50, 1,641,979.91 and 645,976.34

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Solution

The fourth proportional to 1,189,840.50, 1,641,979.91 and 645,976.34 is: 891,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,840.50 : 1,641,979.91 = 645,976.34 : x
  2. Step 2: Convert to fraction form
    1,189,840.50/1,641,979.91 = 645,976.34/x
  3. Step 3: Cross multiply
    1,189,840.50x = 1,641,979.91 × 645,976.34
  4. Step 4: Simplify right side
    1,189,840.50x = 1,060,680,161,175.55
  5. Step 5: Solve for x
    x = 1,060,680,161,175.55/1,189,840.50
  6. Step 6: Final answer
    x = 891,447.35

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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.