Home / 425,520.40-637,438.20-275,864.80

Finding the Fourth Proportional to 425,520.40, 637,438.20 and 275,864.80

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Solution

The fourth proportional to 425,520.40, 637,438.20 and 275,864.80 is: 413,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,520.40 : 637,438.20 = 275,864.80 : x
  2. Step 2: Convert to fraction form
    425,520.40/637,438.20 = 275,864.80/x
  3. Step 3: Cross multiply
    425,520.40x = 637,438.20 × 275,864.80
  4. Step 4: Simplify right side
    425,520.40x = 175,846,761,555.36
  5. Step 5: Solve for x
    x = 175,846,761,555.36/425,520.40
  6. Step 6: Final answer
    x = 413,251.07

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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.