Home / 755,105.08-1,042,068.66-428,431.87

Finding the Fourth Proportional to 755,105.08, 1,042,068.66 and 428,431.87

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Solution

The fourth proportional to 755,105.08, 1,042,068.66 and 428,431.87 is: 591,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,105.08 : 1,042,068.66 = 428,431.87 : x
  2. Step 2: Convert to fraction form
    755,105.08/1,042,068.66 = 428,431.87/x
  3. Step 3: Cross multiply
    755,105.08x = 1,042,068.66 × 428,431.87
  4. Step 4: Simplify right side
    755,105.08x = 446,455,424,672.19
  5. Step 5: Solve for x
    x = 446,455,424,672.19/755,105.08
  6. Step 6: Final answer
    x = 591,249.40

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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.