Home / 639,357.91-882,312.10-352,875.94

Finding the Fourth Proportional to 639,357.91, 882,312.10 and 352,875.94

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Solution

The fourth proportional to 639,357.91, 882,312.10 and 352,875.94 is: 486,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,357.91 : 882,312.10 = 352,875.94 : x
  2. Step 2: Convert to fraction form
    639,357.91/882,312.10 = 352,875.94/x
  3. Step 3: Cross multiply
    639,357.91x = 882,312.10 × 352,875.94
  4. Step 4: Simplify right side
    639,357.91x = 311,346,708,572.90
  5. Step 5: Solve for x
    x = 311,346,708,572.90/639,357.91
  6. Step 6: Final answer
    x = 486,967.79

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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.