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Finding the Fourth Proportional to 768,511.80, 1,152,767.70 and 746,368.43

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Solution

The fourth proportional to 768,511.80, 1,152,767.70 and 746,368.43 is: 1,119,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,511.80 : 1,152,767.70 = 746,368.43 : x
  2. Step 2: Convert to fraction form
    768,511.80/1,152,767.70 = 746,368.43/x
  3. Step 3: Cross multiply
    768,511.80x = 1,152,767.70 × 746,368.43
  4. Step 4: Simplify right side
    768,511.80x = 860,389,412,639.87
  5. Step 5: Solve for x
    x = 860,389,412,639.87/768,511.80
  6. Step 6: Final answer
    x = 1,119,552.64

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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.