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Finding the Fourth Proportional to 768,990.98, 1,152,483.16 and 556,474.72

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Solution

The fourth proportional to 768,990.98, 1,152,483.16 and 556,474.72 is: 833,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,990.98 : 1,152,483.16 = 556,474.72 : x
  2. Step 2: Convert to fraction form
    768,990.98/1,152,483.16 = 556,474.72/x
  3. Step 3: Cross multiply
    768,990.98x = 1,152,483.16 × 556,474.72
  4. Step 4: Simplify right side
    768,990.98x = 641,327,743,765.72
  5. Step 5: Solve for x
    x = 641,327,743,765.72/768,990.98
  6. Step 6: Final answer
    x = 833,986.04

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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.