Home / 1,189,774.08-1,641,900.78-645,914.88

Finding the Fourth Proportional to 1,189,774.08, 1,641,900.78 and 645,914.88

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Solution

The fourth proportional to 1,189,774.08, 1,641,900.78 and 645,914.88 is: 891,369.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,774.08 : 1,641,900.78 = 645,914.88 : x
  2. Step 2: Convert to fraction form
    1,189,774.08/1,641,900.78 = 645,914.88/x
  3. Step 3: Cross multiply
    1,189,774.08x = 1,641,900.78 × 645,914.88
  4. Step 4: Simplify right side
    1,189,774.08x = 1,060,528,145,285.61
  5. Step 5: Solve for x
    x = 1,060,528,145,285.61/1,189,774.08
  6. Step 6: Final answer
    x = 891,369.35

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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.