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Finding the Fourth Proportional to 998,259.10, 1,495,055.85 and 978,214.30

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Solution

The fourth proportional to 998,259.10, 1,495,055.85 and 978,214.30 is: 1,465,035.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,259.10 : 1,495,055.85 = 978,214.30 : x
  2. Step 2: Convert to fraction form
    998,259.10/1,495,055.85 = 978,214.30/x
  3. Step 3: Cross multiply
    998,259.10x = 1,495,055.85 × 978,214.30
  4. Step 4: Simplify right side
    998,259.10x = 1,462,485,011,768.66
  5. Step 5: Solve for x
    x = 1,462,485,011,768.66/998,259.10
  6. Step 6: Final answer
    x = 1,465,035.49

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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.