Home / 739,520.72-1,020,538.72-399,988.96

Finding the Fourth Proportional to 739,520.72, 1,020,538.72 and 399,988.96

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Solution

The fourth proportional to 739,520.72, 1,020,538.72 and 399,988.96 is: 551,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,520.72 : 1,020,538.72 = 399,988.96 : x
  2. Step 2: Convert to fraction form
    739,520.72/1,020,538.72 = 399,988.96/x
  3. Step 3: Cross multiply
    739,520.72x = 1,020,538.72 × 399,988.96
  4. Step 4: Simplify right side
    739,520.72x = 408,204,221,252.53
  5. Step 5: Solve for x
    x = 408,204,221,252.53/739,520.72
  6. Step 6: Final answer
    x = 551,984.83

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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.