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Finding the Fourth Proportional to 984,598.50, 1,358,768.74 and 554,891.88

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Solution

The fourth proportional to 984,598.50, 1,358,768.74 and 554,891.88 is: 765,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,598.50 : 1,358,768.74 = 554,891.88 : x
  2. Step 2: Convert to fraction form
    984,598.50/1,358,768.74 = 554,891.88/x
  3. Step 3: Cross multiply
    984,598.50x = 1,358,768.74 × 554,891.88
  4. Step 4: Simplify right side
    984,598.50x = 753,969,740,623.83
  5. Step 5: Solve for x
    x = 753,969,740,623.83/984,598.50
  6. Step 6: Final answer
    x = 765,763.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.