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Finding the Fourth Proportional to 868,908.60, 1,303,362.90 and 791,926.20

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Solution

The fourth proportional to 868,908.60, 1,303,362.90 and 791,926.20 is: 1,187,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,908.60 : 1,303,362.90 = 791,926.20 : x
  2. Step 2: Convert to fraction form
    868,908.60/1,303,362.90 = 791,926.20/x
  3. Step 3: Cross multiply
    868,908.60x = 1,303,362.90 × 791,926.20
  4. Step 4: Simplify right side
    868,908.60x = 1,032,167,228,617.98
  5. Step 5: Solve for x
    x = 1,032,167,228,617.98/868,908.60
  6. Step 6: Final answer
    x = 1,187,889.30

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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.