Home / 1,586,819.48-2,189,803.95-861,661.31

Finding the Fourth Proportional to 1,586,819.48, 2,189,803.95 and 861,661.31

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Solution

The fourth proportional to 1,586,819.48, 2,189,803.95 and 861,661.31 is: 1,189,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,819.48 : 2,189,803.95 = 861,661.31 : x
  2. Step 2: Convert to fraction form
    1,586,819.48/2,189,803.95 = 861,661.31/x
  3. Step 3: Cross multiply
    1,586,819.48x = 2,189,803.95 × 861,661.31
  4. Step 4: Simplify right side
    1,586,819.48x = 1,886,869,340,200.17
  5. Step 5: Solve for x
    x = 1,886,869,340,200.17/1,586,819.48
  6. Step 6: Final answer
    x = 1,189,088.84

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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.