Home / 639,126.04-882,012.38-352,664.58

Finding the Fourth Proportional to 639,126.04, 882,012.38 and 352,664.58

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Solution

The fourth proportional to 639,126.04, 882,012.38 and 352,664.58 is: 486,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,126.04 : 882,012.38 = 352,664.58 : x
  2. Step 2: Convert to fraction form
    639,126.04/882,012.38 = 352,664.58/x
  3. Step 3: Cross multiply
    639,126.04x = 882,012.38 × 352,664.58
  4. Step 4: Simplify right side
    639,126.04x = 311,054,525,547.50
  5. Step 5: Solve for x
    x = 311,054,525,547.50/639,126.04
  6. Step 6: Final answer
    x = 486,687.30

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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.