Home / 1,315,260.39-1,971,724.19-640,964.55

Finding the Fourth Proportional to 1,315,260.39, 1,971,724.19 and 640,964.55

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Solution

The fourth proportional to 1,315,260.39, 1,971,724.19 and 640,964.55 is: 960,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,260.39 : 1,971,724.19 = 640,964.55 : x
  2. Step 2: Convert to fraction form
    1,315,260.39/1,971,724.19 = 640,964.55/x
  3. Step 3: Cross multiply
    1,315,260.39x = 1,971,724.19 × 640,964.55
  4. Step 4: Simplify right side
    1,315,260.39x = 1,263,805,304,962.64
  5. Step 5: Solve for x
    x = 1,263,805,304,962.64/1,315,260.39
  6. Step 6: Final answer
    x = 960,878.40

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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.