Home / 772,876.68-1,066,586.90-428,701.38

Finding the Fourth Proportional to 772,876.68, 1,066,586.90 and 428,701.38

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Solution

The fourth proportional to 772,876.68, 1,066,586.90 and 428,701.38 is: 591,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,876.68 : 1,066,586.90 = 428,701.38 : x
  2. Step 2: Convert to fraction form
    772,876.68/1,066,586.90 = 428,701.38/x
  3. Step 3: Cross multiply
    772,876.68x = 1,066,586.90 × 428,701.38
  4. Step 4: Simplify right side
    772,876.68x = 457,247,273,776.42
  5. Step 5: Solve for x
    x = 457,247,273,776.42/772,876.68
  6. Step 6: Final answer
    x = 591,617.38

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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.