Home / 758,869.50-1,138,348.79-285,558.94

Finding the Fourth Proportional to 758,869.50, 1,138,348.79 and 285,558.94

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Solution

The fourth proportional to 758,869.50, 1,138,348.79 and 285,558.94 is: 428,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,869.50 : 1,138,348.79 = 285,558.94 : x
  2. Step 2: Convert to fraction form
    758,869.50/1,138,348.79 = 285,558.94/x
  3. Step 3: Cross multiply
    758,869.50x = 1,138,348.79 × 285,558.94
  4. Step 4: Simplify right side
    758,869.50x = 325,065,673,822.68
  5. Step 5: Solve for x
    x = 325,065,673,822.68/758,869.50
  6. Step 6: Final answer
    x = 428,355.17

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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.