Home / 631,498-939,126.56-611,563.36

Finding the Fourth Proportional to 631,498, 939,126.56 and 611,563.36

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Solution

The fourth proportional to 631,498, 939,126.56 and 611,563.36 is: 909,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,498 : 939,126.56 = 611,563.36 : x
  2. Step 2: Convert to fraction form
    631,498/939,126.56 = 611,563.36/x
  3. Step 3: Cross multiply
    631,498x = 939,126.56 × 611,563.36
  4. Step 4: Simplify right side
    631,498x = 574,335,394,498.84
  5. Step 5: Solve for x
    x = 574,335,394,498.84/631,498
  6. Step 6: Final answer
    x = 909,480.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.