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Finding the Fourth Proportional to 787,651.65, 1,182,903.08 and 689,674.05

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Solution

The fourth proportional to 787,651.65, 1,182,903.08 and 689,674.05 is: 1,035,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,651.65 : 1,182,903.08 = 689,674.05 : x
  2. Step 2: Convert to fraction form
    787,651.65/1,182,903.08 = 689,674.05/x
  3. Step 3: Cross multiply
    787,651.65x = 1,182,903.08 × 689,674.05
  4. Step 4: Simplify right side
    787,651.65x = 815,817,554,492.70
  5. Step 5: Solve for x
    x = 815,817,554,492.70/787,651.65
  6. Step 6: Final answer
    x = 1,035,759.34

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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.