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Finding the Fourth Proportional to 639,010.72, 958,710.48 and 302,309.92

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Solution

The fourth proportional to 639,010.72, 958,710.48 and 302,309.92 is: 453,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,010.72 : 958,710.48 = 302,309.92 : x
  2. Step 2: Convert to fraction form
    639,010.72/958,710.48 = 302,309.92/x
  3. Step 3: Cross multiply
    639,010.72x = 958,710.48 × 302,309.92
  4. Step 4: Simplify right side
    639,010.72x = 289,827,688,511.96
  5. Step 5: Solve for x
    x = 289,827,688,511.96/639,010.72
  6. Step 6: Final answer
    x = 453,556.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.