Home / 920,679.48-1,270,487.70-507,135.87

Finding the Fourth Proportional to 920,679.48, 1,270,487.70 and 507,135.87

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Solution

The fourth proportional to 920,679.48, 1,270,487.70 and 507,135.87 is: 699,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,679.48 : 1,270,487.70 = 507,135.87 : x
  2. Step 2: Convert to fraction form
    920,679.48/1,270,487.70 = 507,135.87/x
  3. Step 3: Cross multiply
    920,679.48x = 1,270,487.70 × 507,135.87
  4. Step 4: Simplify right side
    920,679.48x = 644,309,885,063.80
  5. Step 5: Solve for x
    x = 644,309,885,063.80/920,679.48
  6. Step 6: Final answer
    x = 699,819.97

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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.