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Finding the Fourth Proportional to 678,136.56, 933,694.68 and 575,942.64

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Solution

The fourth proportional to 678,136.56, 933,694.68 and 575,942.64 is: 792,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,136.56 : 933,694.68 = 575,942.64 : x
  2. Step 2: Convert to fraction form
    678,136.56/933,694.68 = 575,942.64/x
  3. Step 3: Cross multiply
    678,136.56x = 933,694.68 × 575,942.64
  4. Step 4: Simplify right side
    678,136.56x = 537,754,578,953.16
  5. Step 5: Solve for x
    x = 537,754,578,953.16/678,136.56
  6. Step 6: Final answer
    x = 792,988.63

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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.