Home / 977,138.20-1,465,634.40-408,372.40

Finding the Fourth Proportional to 977,138.20, 1,465,634.40 and 408,372.40

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Solution

The fourth proportional to 977,138.20, 1,465,634.40 and 408,372.40 is: 612,528.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,138.20 : 1,465,634.40 = 408,372.40 : x
  2. Step 2: Convert to fraction form
    977,138.20/1,465,634.40 = 408,372.40/x
  3. Step 3: Cross multiply
    977,138.20x = 1,465,634.40 × 408,372.40
  4. Step 4: Simplify right side
    977,138.20x = 598,524,637,450.56
  5. Step 5: Solve for x
    x = 598,524,637,450.56/977,138.20
  6. Step 6: Final answer
    x = 612,528.13

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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.