Home / 758,982.80-1,139,786.40-404,688.80

Finding the Fourth Proportional to 758,982.80, 1,139,786.40 and 404,688.80

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Solution

The fourth proportional to 758,982.80, 1,139,786.40 and 404,688.80 is: 607,732.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,982.80 : 1,139,786.40 = 404,688.80 : x
  2. Step 2: Convert to fraction form
    758,982.80/1,139,786.40 = 404,688.80/x
  3. Step 3: Cross multiply
    758,982.80x = 1,139,786.40 × 404,688.80
  4. Step 4: Simplify right side
    758,982.80x = 461,258,790,472.32
  5. Step 5: Solve for x
    x = 461,258,790,472.32/758,982.80
  6. Step 6: Final answer
    x = 607,732.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.