Home / 755,669.32-1,042,744.24-428,878.40

Finding the Fourth Proportional to 755,669.32, 1,042,744.24 and 428,878.40

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Solution

The fourth proportional to 755,669.32, 1,042,744.24 and 428,878.40 is: 591,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,669.32 : 1,042,744.24 = 428,878.40 : x
  2. Step 2: Convert to fraction form
    755,669.32/1,042,744.24 = 428,878.40/x
  3. Step 3: Cross multiply
    755,669.32x = 1,042,744.24 × 428,878.40
  4. Step 4: Simplify right side
    755,669.32x = 447,210,481,260.42
  5. Step 5: Solve for x
    x = 447,210,481,260.42/755,669.32
  6. Step 6: Final answer
    x = 591,807.12

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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.