Home / 739,975.64-1,021,168.95-400,443.80

Finding the Fourth Proportional to 739,975.64, 1,021,168.95 and 400,443.80

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Solution

The fourth proportional to 739,975.64, 1,021,168.95 and 400,443.80 is: 552,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,975.64 : 1,021,168.95 = 400,443.80 : x
  2. Step 2: Convert to fraction form
    739,975.64/1,021,168.95 = 400,443.80/x
  3. Step 3: Cross multiply
    739,975.64x = 1,021,168.95 × 400,443.80
  4. Step 4: Simplify right side
    739,975.64x = 408,920,774,780.01
  5. Step 5: Solve for x
    x = 408,920,774,780.01/739,975.64
  6. Step 6: Final answer
    x = 552,613.83

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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.