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Finding the Fourth Proportional to 671,146.85, 926,182.78 and 369,340.85

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Solution

The fourth proportional to 671,146.85, 926,182.78 and 369,340.85 is: 509,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,146.85 : 926,182.78 = 369,340.85 : x
  2. Step 2: Convert to fraction form
    671,146.85/926,182.78 = 369,340.85/x
  3. Step 3: Cross multiply
    671,146.85x = 926,182.78 × 369,340.85
  4. Step 4: Simplify right side
    671,146.85x = 342,077,131,743.84
  5. Step 5: Solve for x
    x = 342,077,131,743.84/671,146.85
  6. Step 6: Final answer
    x = 509,690.44

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Half scale
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Double scale
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Similar ratio
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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.