Home / 755,629.19-1,042,689.01-428,838.14

Finding the Fourth Proportional to 755,629.19, 1,042,689.01 and 428,838.14

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Solution

The fourth proportional to 755,629.19, 1,042,689.01 and 428,838.14 is: 591,751.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,629.19 : 1,042,689.01 = 428,838.14 : x
  2. Step 2: Convert to fraction form
    755,629.19/1,042,689.01 = 428,838.14/x
  3. Step 3: Cross multiply
    755,629.19x = 1,042,689.01 × 428,838.14
  4. Step 4: Simplify right side
    755,629.19x = 447,144,808,289.21
  5. Step 5: Solve for x
    x = 447,144,808,289.21/755,629.19
  6. Step 6: Final answer
    x = 591,751.63

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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.