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Finding the Fourth Proportional to 883,985.80, 1,325,978.70 and 322,947.40

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Solution

The fourth proportional to 883,985.80, 1,325,978.70 and 322,947.40 is: 484,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,985.80 : 1,325,978.70 = 322,947.40 : x
  2. Step 2: Convert to fraction form
    883,985.80/1,325,978.70 = 322,947.40/x
  3. Step 3: Cross multiply
    883,985.80x = 1,325,978.70 × 322,947.40
  4. Step 4: Simplify right side
    883,985.80x = 428,221,373,620.38
  5. Step 5: Solve for x
    x = 428,221,373,620.38/883,985.80
  6. Step 6: Final answer
    x = 484,421.10

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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.