Home / 521,255.10-783,049.05-500,000.70

Finding the Fourth Proportional to 521,255.10, 783,049.05 and 500,000.70

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Solution

The fourth proportional to 521,255.10, 783,049.05 and 500,000.70 is: 751,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,255.10 : 783,049.05 = 500,000.70 : x
  2. Step 2: Convert to fraction form
    521,255.10/783,049.05 = 500,000.70/x
  3. Step 3: Cross multiply
    521,255.10x = 783,049.05 × 500,000.70
  4. Step 4: Simplify right side
    521,255.10x = 391,525,073,134.34
  5. Step 5: Solve for x
    x = 391,525,073,134.34/521,255.10
  6. Step 6: Final answer
    x = 751,119.89

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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.