Home / 460,434.10-690,127.42-280,122.05

Finding the Fourth Proportional to 460,434.10, 690,127.42 and 280,122.05

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Solution

The fourth proportional to 460,434.10, 690,127.42 and 280,122.05 is: 419,864.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,434.10 : 690,127.42 = 280,122.05 : x
  2. Step 2: Convert to fraction form
    460,434.10/690,127.42 = 280,122.05/x
  3. Step 3: Cross multiply
    460,434.10x = 690,127.42 × 280,122.05
  4. Step 4: Simplify right side
    460,434.10x = 193,319,907,651.61
  5. Step 5: Solve for x
    x = 193,319,907,651.61/460,434.10
  6. Step 6: Final answer
    x = 419,864.44

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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.