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Finding the Fourth Proportional to 674,136, 930,307.68 and 372,349.44

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Solution

The fourth proportional to 674,136, 930,307.68 and 372,349.44 is: 513,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,136 : 930,307.68 = 372,349.44 : x
  2. Step 2: Convert to fraction form
    674,136/930,307.68 = 372,349.44/x
  3. Step 3: Cross multiply
    674,136x = 930,307.68 × 372,349.44
  4. Step 4: Simplify right side
    674,136x = 346,399,543,675.70
  5. Step 5: Solve for x
    x = 346,399,543,675.70/674,136
  6. Step 6: Final answer
    x = 513,842.23

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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.