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Finding the Fourth Proportional to 612,996.72, 845,919 and 341,064.96

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Solution

The fourth proportional to 612,996.72, 845,919 and 341,064.96 is: 470,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,996.72 : 845,919 = 341,064.96 : x
  2. Step 2: Convert to fraction form
    612,996.72/845,919 = 341,064.96/x
  3. Step 3: Cross multiply
    612,996.72x = 845,919 × 341,064.96
  4. Step 4: Simplify right side
    612,996.72x = 288,513,329,898.24
  5. Step 5: Solve for x
    x = 288,513,329,898.24/612,996.72
  6. Step 6: Final answer
    x = 470,660.48

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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.