Home / 639,397.36-882,305.58-352,899.10

Finding the Fourth Proportional to 639,397.36, 882,305.58 and 352,899.10

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Solution

The fourth proportional to 639,397.36, 882,305.58 and 352,899.10 is: 486,966.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,397.36 : 882,305.58 = 352,899.10 : x
  2. Step 2: Convert to fraction form
    639,397.36/882,305.58 = 352,899.10/x
  3. Step 3: Cross multiply
    639,397.36x = 882,305.58 × 352,899.10
  4. Step 4: Simplify right side
    639,397.36x = 311,364,845,106.98
  5. Step 5: Solve for x
    x = 311,364,845,106.98/639,397.36
  6. Step 6: Final answer
    x = 486,966.11

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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.