Home / 758,869.48-1,138,348.78-285,558.94

Finding the Fourth Proportional to 758,869.48, 1,138,348.78 and 285,558.94

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Solution

The fourth proportional to 758,869.48, 1,138,348.78 and 285,558.94 is: 428,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,869.48 : 1,138,348.78 = 285,558.94 : x
  2. Step 2: Convert to fraction form
    758,869.48/1,138,348.78 = 285,558.94/x
  3. Step 3: Cross multiply
    758,869.48x = 1,138,348.78 × 285,558.94
  4. Step 4: Simplify right side
    758,869.48x = 325,065,670,967.09
  5. Step 5: Solve for x
    x = 325,065,670,967.09/758,869.48
  6. Step 6: Final answer
    x = 428,355.18

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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.