Home / 739,977.12-1,021,171.64-400,445.40

Finding the Fourth Proportional to 739,977.12, 1,021,171.64 and 400,445.40

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Solution

The fourth proportional to 739,977.12, 1,021,171.64 and 400,445.40 is: 552,616.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,977.12 : 1,021,171.64 = 400,445.40 : x
  2. Step 2: Convert to fraction form
    739,977.12/1,021,171.64 = 400,445.40/x
  3. Step 3: Cross multiply
    739,977.12x = 1,021,171.64 × 400,445.40
  4. Step 4: Simplify right side
    739,977.12x = 408,923,485,848.46
  5. Step 5: Solve for x
    x = 408,923,485,848.46/739,977.12
  6. Step 6: Final answer
    x = 552,616.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.