Home / 507,219.93-699,985.68-280,865.43

Finding the Fourth Proportional to 507,219.93, 699,985.68 and 280,865.43

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Solution

The fourth proportional to 507,219.93, 699,985.68 and 280,865.43 is: 387,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,219.93 : 699,985.68 = 280,865.43 : x
  2. Step 2: Convert to fraction form
    507,219.93/699,985.68 = 280,865.43/x
  3. Step 3: Cross multiply
    507,219.93x = 699,985.68 × 280,865.43
  4. Step 4: Simplify right side
    507,219.93x = 196,601,779,007.04
  5. Step 5: Solve for x
    x = 196,601,779,007.04/507,219.93
  6. Step 6: Final answer
    x = 387,606.57

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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.