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Finding the Fourth Proportional to 1,433,402.56, 1,978,095.84 and 788,822.75

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Solution

The fourth proportional to 1,433,402.56, 1,978,095.84 and 788,822.75 is: 1,088,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,402.56 : 1,978,095.84 = 788,822.75 : x
  2. Step 2: Convert to fraction form
    1,433,402.56/1,978,095.84 = 788,822.75/x
  3. Step 3: Cross multiply
    1,433,402.56x = 1,978,095.84 × 788,822.75
  4. Step 4: Simplify right side
    1,433,402.56x = 1,560,367,002,259.51
  5. Step 5: Solve for x
    x = 1,560,367,002,259.51/1,433,402.56
  6. Step 6: Final answer
    x = 1,088,575.56

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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.