Home / 638,917.88-956,968.76-528,114.70

Finding the Fourth Proportional to 638,917.88, 956,968.76 and 528,114.70

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Solution

The fourth proportional to 638,917.88, 956,968.76 and 528,114.70 is: 791,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,917.88 : 956,968.76 = 528,114.70 : x
  2. Step 2: Convert to fraction form
    638,917.88/956,968.76 = 528,114.70/x
  3. Step 3: Cross multiply
    638,917.88x = 956,968.76 × 528,114.70
  4. Step 4: Simplify right side
    638,917.88x = 505,389,269,596.77
  5. Step 5: Solve for x
    x = 505,389,269,596.77/638,917.88
  6. Step 6: Final answer
    x = 791,008.18

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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.