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Finding the Fourth Proportional to 636,855.69, 878,860.82 and 350,369.63

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Solution

The fourth proportional to 636,855.69, 878,860.82 and 350,369.63 is: 483,510.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,855.69 : 878,860.82 = 350,369.63 : x
  2. Step 2: Convert to fraction form
    636,855.69/878,860.82 = 350,369.63/x
  3. Step 3: Cross multiply
    636,855.69x = 878,860.82 × 350,369.63
  4. Step 4: Simplify right side
    636,855.69x = 307,926,136,806.52
  5. Step 5: Solve for x
    x = 307,926,136,806.52/636,855.69
  6. Step 6: Final answer
    x = 483,510.07

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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.