Home / 781,819.84-1,078,723.20-459,504.64

Finding the Fourth Proportional to 781,819.84, 1,078,723.20 and 459,504.64

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Solution

The fourth proportional to 781,819.84, 1,078,723.20 and 459,504.64 is: 634,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,819.84 : 1,078,723.20 = 459,504.64 : x
  2. Step 2: Convert to fraction form
    781,819.84/1,078,723.20 = 459,504.64/x
  3. Step 3: Cross multiply
    781,819.84x = 1,078,723.20 × 459,504.64
  4. Step 4: Simplify right side
    781,819.84x = 495,678,315,675.65
  5. Step 5: Solve for x
    x = 495,678,315,675.65/781,819.84
  6. Step 6: Final answer
    x = 634,005.80

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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.