Home / 1,290,704.20-1,936,056.30-865,551.40

Finding the Fourth Proportional to 1,290,704.20, 1,936,056.30 and 865,551.40

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Solution

The fourth proportional to 1,290,704.20, 1,936,056.30 and 865,551.40 is: 1,298,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,704.20 : 1,936,056.30 = 865,551.40 : x
  2. Step 2: Convert to fraction form
    1,290,704.20/1,936,056.30 = 865,551.40/x
  3. Step 3: Cross multiply
    1,290,704.20x = 1,936,056.30 × 865,551.40
  4. Step 4: Simplify right side
    1,290,704.20x = 1,675,756,240,943.82
  5. Step 5: Solve for x
    x = 1,675,756,240,943.82/1,290,704.20
  6. Step 6: Final answer
    x = 1,298,327.10

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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.