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Finding the Fourth Proportional to 830,491.80, 1,243,769.40 and 830,491.80

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Solution

The fourth proportional to 830,491.80, 1,243,769.40 and 830,491.80 is: 1,243,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,491.80 : 1,243,769.40 = 830,491.80 : x
  2. Step 2: Convert to fraction form
    830,491.80/1,243,769.40 = 830,491.80/x
  3. Step 3: Cross multiply
    830,491.80x = 1,243,769.40 × 830,491.80
  4. Step 4: Simplify right side
    830,491.80x = 1,032,940,287,790.92
  5. Step 5: Solve for x
    x = 1,032,940,287,790.92/830,491.80
  6. Step 6: Final answer
    x = 1,243,769.40

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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.