Home / 1,189,533.15-1,641,511.80-645,657.48

Finding the Fourth Proportional to 1,189,533.15, 1,641,511.80 and 645,657.48

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Solution

The fourth proportional to 1,189,533.15, 1,641,511.80 and 645,657.48 is: 890,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,533.15 : 1,641,511.80 = 645,657.48 : x
  2. Step 2: Convert to fraction form
    1,189,533.15/1,641,511.80 = 645,657.48/x
  3. Step 3: Cross multiply
    1,189,533.15x = 1,641,511.80 × 645,657.48
  4. Step 4: Simplify right side
    1,189,533.15x = 1,059,854,372,178.26
  5. Step 5: Solve for x
    x = 1,059,854,372,178.26/1,189,533.15
  6. Step 6: Final answer
    x = 890,983.47

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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.