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Finding the Fourth Proportional to 678,900.76, 1,018,482.42 and 229,694.82

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Solution

The fourth proportional to 678,900.76, 1,018,482.42 and 229,694.82 is: 344,586.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,900.76 : 1,018,482.42 = 229,694.82 : x
  2. Step 2: Convert to fraction form
    678,900.76/1,018,482.42 = 229,694.82/x
  3. Step 3: Cross multiply
    678,900.76x = 1,018,482.42 × 229,694.82
  4. Step 4: Simplify right side
    678,900.76x = 233,940,136,135.06
  5. Step 5: Solve for x
    x = 233,940,136,135.06/678,900.76
  6. Step 6: Final answer
    x = 344,586.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.