Home / 739,448.96-1,020,439.55-399,917.21

Finding the Fourth Proportional to 739,448.96, 1,020,439.55 and 399,917.21

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Solution

The fourth proportional to 739,448.96, 1,020,439.55 and 399,917.21 is: 551,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,448.96 : 1,020,439.55 = 399,917.21 : x
  2. Step 2: Convert to fraction form
    739,448.96/1,020,439.55 = 399,917.21/x
  3. Step 3: Cross multiply
    739,448.96x = 1,020,439.55 × 399,917.21
  4. Step 4: Simplify right side
    739,448.96x = 408,091,332,707.46
  5. Step 5: Solve for x
    x = 408,091,332,707.46/739,448.96
  6. Step 6: Final answer
    x = 551,885.74

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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.