Home / 1,387,480.32-2,081,191.20-639,526.32

Finding the Fourth Proportional to 1,387,480.32, 2,081,191.20 and 639,526.32

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Solution

The fourth proportional to 1,387,480.32, 2,081,191.20 and 639,526.32 is: 959,275.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,480.32 : 2,081,191.20 = 639,526.32 : x
  2. Step 2: Convert to fraction form
    1,387,480.32/2,081,191.20 = 639,526.32/x
  3. Step 3: Cross multiply
    1,387,480.32x = 2,081,191.20 × 639,526.32
  4. Step 4: Simplify right side
    1,387,480.32x = 1,330,976,549,352.38
  5. Step 5: Solve for x
    x = 1,330,976,549,352.38/1,387,480.32
  6. Step 6: Final answer
    x = 959,275.98

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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.