Home / 1,277,409.60-1,917,669.60-645,998.40

Finding the Fourth Proportional to 1,277,409.60, 1,917,669.60 and 645,998.40

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Solution

The fourth proportional to 1,277,409.60, 1,917,669.60 and 645,998.40 is: 969,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,409.60 : 1,917,669.60 = 645,998.40 : x
  2. Step 2: Convert to fraction form
    1,277,409.60/1,917,669.60 = 645,998.40/x
  3. Step 3: Cross multiply
    1,277,409.60x = 1,917,669.60 × 645,998.40
  4. Step 4: Simplify right side
    1,277,409.60x = 1,238,811,493,328.64
  5. Step 5: Solve for x
    x = 1,238,811,493,328.64/1,277,409.60
  6. Step 6: Final answer
    x = 969,784.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.