Home / 639,161.28-881,919.36-384,528.87

Finding the Fourth Proportional to 639,161.28, 881,919.36 and 384,528.87

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Solution

The fourth proportional to 639,161.28, 881,919.36 and 384,528.87 is: 530,575.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,161.28 : 881,919.36 = 384,528.87 : x
  2. Step 2: Convert to fraction form
    639,161.28/881,919.36 = 384,528.87/x
  3. Step 3: Cross multiply
    639,161.28x = 881,919.36 × 384,528.87
  4. Step 4: Simplify right side
    639,161.28x = 339,123,454,931.92
  5. Step 5: Solve for x
    x = 339,123,454,931.92/639,161.28
  6. Step 6: Final answer
    x = 530,575.72

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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.