Home / 638,266.80-956,416.05-553,629.90

Finding the Fourth Proportional to 638,266.80, 956,416.05 and 553,629.90

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Solution

The fourth proportional to 638,266.80, 956,416.05 and 553,629.90 is: 829,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,266.80 : 956,416.05 = 553,629.90 : x
  2. Step 2: Convert to fraction form
    638,266.80/956,416.05 = 553,629.90/x
  3. Step 3: Cross multiply
    638,266.80x = 956,416.05 × 553,629.90
  4. Step 4: Simplify right side
    638,266.80x = 529,500,522,119.90
  5. Step 5: Solve for x
    x = 529,500,522,119.90/638,266.80
  6. Step 6: Final answer
    x = 829,591.20

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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.