Home / 639,384.74-882,288.08-352,886.36

Finding the Fourth Proportional to 639,384.74, 882,288.08 and 352,886.36

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Solution

The fourth proportional to 639,384.74, 882,288.08 and 352,886.36 is: 486,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,384.74 : 882,288.08 = 352,886.36 : x
  2. Step 2: Convert to fraction form
    639,384.74/882,288.08 = 352,886.36/x
  3. Step 3: Cross multiply
    639,384.74x = 882,288.08 × 352,886.36
  4. Step 4: Simplify right side
    639,384.74x = 311,347,429,022.59
  5. Step 5: Solve for x
    x = 311,347,429,022.59/639,384.74
  6. Step 6: Final answer
    x = 486,948.48

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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.