Home / 739,922.55-1,021,095.81-400,390.80

Finding the Fourth Proportional to 739,922.55, 1,021,095.81 and 400,390.80

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Solution

The fourth proportional to 739,922.55, 1,021,095.81 and 400,390.80 is: 552,540.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,922.55 : 1,021,095.81 = 400,390.80 : x
  2. Step 2: Convert to fraction form
    739,922.55/1,021,095.81 = 400,390.80/x
  3. Step 3: Cross multiply
    739,922.55x = 1,021,095.81 × 400,390.80
  4. Step 4: Simplify right side
    739,922.55x = 408,837,368,242.55
  5. Step 5: Solve for x
    x = 408,837,368,242.55/739,922.55
  6. Step 6: Final answer
    x = 552,540.76

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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.