Home / 758,984.80-1,139,789.40-404,690.80

Finding the Fourth Proportional to 758,984.80, 1,139,789.40 and 404,690.80

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Solution

The fourth proportional to 758,984.80, 1,139,789.40 and 404,690.80 is: 607,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,984.80 : 1,139,789.40 = 404,690.80 : x
  2. Step 2: Convert to fraction form
    758,984.80/1,139,789.40 = 404,690.80/x
  3. Step 3: Cross multiply
    758,984.80x = 1,139,789.40 × 404,690.80
  4. Step 4: Simplify right side
    758,984.80x = 461,262,284,117.52
  5. Step 5: Solve for x
    x = 461,262,284,117.52/758,984.80
  6. Step 6: Final answer
    x = 607,735.87

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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.