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Finding the Fourth Proportional to 879,554.60, 1,213,159.60 and 807,191.16

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Solution

The fourth proportional to 879,554.60, 1,213,159.60 and 807,191.16 is: 1,113,349.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,554.60 : 1,213,159.60 = 807,191.16 : x
  2. Step 2: Convert to fraction form
    879,554.60/1,213,159.60 = 807,191.16/x
  3. Step 3: Cross multiply
    879,554.60x = 1,213,159.60 × 807,191.16
  4. Step 4: Simplify right side
    879,554.60x = 979,251,704,789.14
  5. Step 5: Solve for x
    x = 979,251,704,789.14/879,554.60
  6. Step 6: Final answer
    x = 1,113,349.53

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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.