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Finding the Fourth Proportional to 1,248,975.17, 1,723,627.51 and 765,446.88

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Solution

The fourth proportional to 1,248,975.17, 1,723,627.51 and 765,446.88 is: 1,056,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,975.17 : 1,723,627.51 = 765,446.88 : x
  2. Step 2: Convert to fraction form
    1,248,975.17/1,723,627.51 = 765,446.88/x
  3. Step 3: Cross multiply
    1,248,975.17x = 1,723,627.51 × 765,446.88
  4. Step 4: Simplify right side
    1,248,975.17x = 1,319,345,299,811.67
  5. Step 5: Solve for x
    x = 1,319,345,299,811.67/1,248,975.17
  6. Step 6: Final answer
    x = 1,056,342.30

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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.