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Finding the Fourth Proportional to 775,953.72, 1,070,805.82 and 436,421.97

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Solution

The fourth proportional to 775,953.72, 1,070,805.82 and 436,421.97 is: 602,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,953.72 : 1,070,805.82 = 436,421.97 : x
  2. Step 2: Convert to fraction form
    775,953.72/1,070,805.82 = 436,421.97/x
  3. Step 3: Cross multiply
    775,953.72x = 1,070,805.82 × 436,421.97
  4. Step 4: Simplify right side
    775,953.72x = 467,323,185,451.87
  5. Step 5: Solve for x
    x = 467,323,185,451.87/775,953.72
  6. Step 6: Final answer
    x = 602,256.52

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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.