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Finding the Fourth Proportional to 639,600, 882,751.68 and 371,483.52

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Solution

The fourth proportional to 639,600, 882,751.68 and 371,483.52 is: 512,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,600 : 882,751.68 = 371,483.52 : x
  2. Step 2: Convert to fraction form
    639,600/882,751.68 = 371,483.52/x
  3. Step 3: Cross multiply
    639,600x = 882,751.68 × 371,483.52
  4. Step 4: Simplify right side
    639,600x = 327,927,701,372.31
  5. Step 5: Solve for x
    x = 327,927,701,372.31/639,600
  6. Step 6: Final answer
    x = 512,707.48

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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.