Home / 856,785.40-1,285,178.10-502,199.80

Finding the Fourth Proportional to 856,785.40, 1,285,178.10 and 502,199.80

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Solution

The fourth proportional to 856,785.40, 1,285,178.10 and 502,199.80 is: 753,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,785.40 : 1,285,178.10 = 502,199.80 : x
  2. Step 2: Convert to fraction form
    856,785.40/1,285,178.10 = 502,199.80/x
  3. Step 3: Cross multiply
    856,785.40x = 1,285,178.10 × 502,199.80
  4. Step 4: Simplify right side
    856,785.40x = 645,416,184,784.38
  5. Step 5: Solve for x
    x = 645,416,184,784.38/856,785.40
  6. Step 6: Final answer
    x = 753,299.70

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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.