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Finding the Fourth Proportional to 1,260,581.02, 1,739,612.92 and 687,623.74

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Solution

The fourth proportional to 1,260,581.02, 1,739,612.92 and 687,623.74 is: 948,926.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,581.02 : 1,739,612.92 = 687,623.74 : x
  2. Step 2: Convert to fraction form
    1,260,581.02/1,739,612.92 = 687,623.74/x
  3. Step 3: Cross multiply
    1,260,581.02x = 1,739,612.92 × 687,623.74
  4. Step 4: Simplify right side
    1,260,581.02x = 1,196,199,142,202.72
  5. Step 5: Solve for x
    x = 1,196,199,142,202.72/1,260,581.02
  6. Step 6: Final answer
    x = 948,926.82

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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.