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Finding the Fourth Proportional to 854,543.82, 1,280,124.98 and 694,798.06

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Solution

The fourth proportional to 854,543.82, 1,280,124.98 and 694,798.06 is: 1,040,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,543.82 : 1,280,124.98 = 694,798.06 : x
  2. Step 2: Convert to fraction form
    854,543.82/1,280,124.98 = 694,798.06/x
  3. Step 3: Cross multiply
    854,543.82x = 1,280,124.98 × 694,798.06
  4. Step 4: Simplify right side
    854,543.82x = 889,428,352,661.54
  5. Step 5: Solve for x
    x = 889,428,352,661.54/854,543.82
  6. Step 6: Final answer
    x = 1,040,822.40

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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.