Home / 557,340.11-769,176.78-315,665.67

Finding the Fourth Proportional to 557,340.11, 769,176.78 and 315,665.67

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Solution

The fourth proportional to 557,340.11, 769,176.78 and 315,665.67 is: 435,645.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,340.11 : 769,176.78 = 315,665.67 : x
  2. Step 2: Convert to fraction form
    557,340.11/769,176.78 = 315,665.67/x
  3. Step 3: Cross multiply
    557,340.11x = 769,176.78 × 315,665.67
  4. Step 4: Simplify right side
    557,340.11x = 242,802,703,607.14
  5. Step 5: Solve for x
    x = 242,802,703,607.14/557,340.11
  6. Step 6: Final answer
    x = 435,645.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.