Home / 1,328,709.60-1,993,258.80-429,998.40

Finding the Fourth Proportional to 1,328,709.60, 1,993,258.80 and 429,998.40

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Solution

The fourth proportional to 1,328,709.60, 1,993,258.80 and 429,998.40 is: 645,060.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,709.60 : 1,993,258.80 = 429,998.40 : x
  2. Step 2: Convert to fraction form
    1,328,709.60/1,993,258.80 = 429,998.40/x
  3. Step 3: Cross multiply
    1,328,709.60x = 1,993,258.80 × 429,998.40
  4. Step 4: Simplify right side
    1,328,709.60x = 857,098,094,785.92
  5. Step 5: Solve for x
    x = 857,098,094,785.92/1,328,709.60
  6. Step 6: Final answer
    x = 645,060.51

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1.5x scale

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.