Home / 690,619.62-952,928.78-384,688.20

Finding the Fourth Proportional to 690,619.62, 952,928.78 and 384,688.20

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Solution

The fourth proportional to 690,619.62, 952,928.78 and 384,688.20 is: 530,799.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,619.62 : 952,928.78 = 384,688.20 : x
  2. Step 2: Convert to fraction form
    690,619.62/952,928.78 = 384,688.20/x
  3. Step 3: Cross multiply
    690,619.62x = 952,928.78 × 384,688.20
  4. Step 4: Simplify right side
    690,619.62x = 366,580,455,182.96
  5. Step 5: Solve for x
    x = 366,580,455,182.96/690,619.62
  6. Step 6: Final answer
    x = 530,799.36

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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.