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Finding the Fourth Proportional to 1,318,364.10, 1,977,546.15 and 786,923.10

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Solution

The fourth proportional to 1,318,364.10, 1,977,546.15 and 786,923.10 is: 1,180,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,364.10 : 1,977,546.15 = 786,923.10 : x
  2. Step 2: Convert to fraction form
    1,318,364.10/1,977,546.15 = 786,923.10/x
  3. Step 3: Cross multiply
    1,318,364.10x = 1,977,546.15 × 786,923.10
  4. Step 4: Simplify right side
    1,318,364.10x = 1,556,176,746,751.07
  5. Step 5: Solve for x
    x = 1,556,176,746,751.07/1,318,364.10
  6. Step 6: Final answer
    x = 1,180,384.65

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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.