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Finding the Fourth Proportional to 1,384,819, 1,911,055.98 and 748,915

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Solution

The fourth proportional to 1,384,819, 1,911,055.98 and 748,915 is: 1,033,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,819 : 1,911,055.98 = 748,915 : x
  2. Step 2: Convert to fraction form
    1,384,819/1,911,055.98 = 748,915/x
  3. Step 3: Cross multiply
    1,384,819x = 1,911,055.98 × 748,915
  4. Step 4: Simplify right side
    1,384,819x = 1,431,218,489,261.70
  5. Step 5: Solve for x
    x = 1,431,218,489,261.70/1,384,819
  6. Step 6: Final answer
    x = 1,033,505.82

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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.