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Finding the Fourth Proportional to 671,136.63, 926,168.69 and 369,330.63

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Solution

The fourth proportional to 671,136.63, 926,168.69 and 369,330.63 is: 509,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,136.63 : 926,168.69 = 369,330.63 : x
  2. Step 2: Convert to fraction form
    671,136.63/926,168.69 = 369,330.63/x
  3. Step 3: Cross multiply
    671,136.63x = 926,168.69 × 369,330.63
  4. Step 4: Simplify right side
    671,136.63x = 342,062,465,763.98
  5. Step 5: Solve for x
    x = 342,062,465,763.98/671,136.63
  6. Step 6: Final answer
    x = 509,676.35

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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.