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Finding the Fourth Proportional to 830,443.80, 1,243,697.40 and 830,443.80

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Solution

The fourth proportional to 830,443.80, 1,243,697.40 and 830,443.80 is: 1,243,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,443.80 : 1,243,697.40 = 830,443.80 : x
  2. Step 2: Convert to fraction form
    830,443.80/1,243,697.40 = 830,443.80/x
  3. Step 3: Cross multiply
    830,443.80x = 1,243,697.40 × 830,443.80
  4. Step 4: Simplify right side
    830,443.80x = 1,032,820,794,906.12
  5. Step 5: Solve for x
    x = 1,032,820,794,906.12/830,443.80
  6. Step 6: Final answer
    x = 1,243,697.40

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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.