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Finding the Fourth Proportional to 855,668.60, 1,281,657.55 and 805,363.28

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Solution

The fourth proportional to 855,668.60, 1,281,657.55 and 805,363.28 is: 1,206,308.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,668.60 : 1,281,657.55 = 805,363.28 : x
  2. Step 2: Convert to fraction form
    855,668.60/1,281,657.55 = 805,363.28/x
  3. Step 3: Cross multiply
    855,668.60x = 1,281,657.55 × 805,363.28
  4. Step 4: Simplify right side
    855,668.60x = 1,032,199,928,304.76
  5. Step 5: Solve for x
    x = 1,032,199,928,304.76/855,668.60
  6. Step 6: Final answer
    x = 1,206,308.06

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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.