Home / 920,683.48-1,270,493.22-507,139.87

Finding the Fourth Proportional to 920,683.48, 1,270,493.22 and 507,139.87

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Solution

The fourth proportional to 920,683.48, 1,270,493.22 and 507,139.87 is: 699,825.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,683.48 : 1,270,493.22 = 507,139.87 : x
  2. Step 2: Convert to fraction form
    920,683.48/1,270,493.22 = 507,139.87/x
  3. Step 3: Cross multiply
    920,683.48x = 1,270,493.22 × 507,139.87
  4. Step 4: Simplify right side
    920,683.48x = 644,317,766,426.68
  5. Step 5: Solve for x
    x = 644,317,766,426.68/920,683.48
  6. Step 6: Final answer
    x = 699,825.49

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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.