Home / 1,291,717.30-1,936,701.15-660,111.70

Finding the Fourth Proportional to 1,291,717.30, 1,936,701.15 and 660,111.70

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Solution

The fourth proportional to 1,291,717.30, 1,936,701.15 and 660,111.70 is: 989,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,717.30 : 1,936,701.15 = 660,111.70 : x
  2. Step 2: Convert to fraction form
    1,291,717.30/1,936,701.15 = 660,111.70/x
  3. Step 3: Cross multiply
    1,291,717.30x = 1,936,701.15 × 660,111.70
  4. Step 4: Simplify right side
    1,291,717.30x = 1,278,439,088,518.45
  5. Step 5: Solve for x
    x = 1,278,439,088,518.45/1,291,717.30
  6. Step 6: Final answer
    x = 989,720.50

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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.