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Finding the Fourth Proportional to 770,768.04, 1,155,864.78 and 265,187.64

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Solution

The fourth proportional to 770,768.04, 1,155,864.78 and 265,187.64 is: 397,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,768.04 : 1,155,864.78 = 265,187.64 : x
  2. Step 2: Convert to fraction form
    770,768.04/1,155,864.78 = 265,187.64/x
  3. Step 3: Cross multiply
    770,768.04x = 1,155,864.78 × 265,187.64
  4. Step 4: Simplify right side
    770,768.04x = 306,521,053,167.32
  5. Step 5: Solve for x
    x = 306,521,053,167.32/770,768.04
  6. Step 6: Final answer
    x = 397,682.62

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1.5x scale

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.