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Finding the Fourth Proportional to 1,289,834.40, 1,934,751.60 and 652,105.20

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Solution

The fourth proportional to 1,289,834.40, 1,934,751.60 and 652,105.20 is: 978,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,834.40 : 1,934,751.60 = 652,105.20 : x
  2. Step 2: Convert to fraction form
    1,289,834.40/1,934,751.60 = 652,105.20/x
  3. Step 3: Cross multiply
    1,289,834.40x = 1,934,751.60 × 652,105.20
  4. Step 4: Simplify right side
    1,289,834.40x = 1,261,661,579,068.32
  5. Step 5: Solve for x
    x = 1,261,661,579,068.32/1,289,834.40
  6. Step 6: Final answer
    x = 978,157.80

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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.