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Finding the Fourth Proportional to 671,136.47, 926,168.48 and 369,330.47

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Solution

The fourth proportional to 671,136.47, 926,168.48 and 369,330.47 is: 509,676.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,136.47 : 926,168.48 = 369,330.47 : x
  2. Step 2: Convert to fraction form
    671,136.47/926,168.48 = 369,330.47/x
  3. Step 3: Cross multiply
    671,136.47x = 926,168.48 × 369,330.47
  4. Step 4: Simplify right side
    671,136.47x = 342,062,238,398.21
  5. Step 5: Solve for x
    x = 342,062,238,398.21/671,136.47
  6. Step 6: Final answer
    x = 509,676.13

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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.