Home / 678,857.76-1,018,417.86-229,651.61

Finding the Fourth Proportional to 678,857.76, 1,018,417.86 and 229,651.61

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Solution

The fourth proportional to 678,857.76, 1,018,417.86 and 229,651.61 is: 344,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,857.76 : 1,018,417.86 = 229,651.61 : x
  2. Step 2: Convert to fraction form
    678,857.76/1,018,417.86 = 229,651.61/x
  3. Step 3: Cross multiply
    678,857.76x = 1,018,417.86 × 229,651.61
  4. Step 4: Simplify right side
    678,857.76x = 233,881,296,109.67
  5. Step 5: Solve for x
    x = 233,881,296,109.67/678,857.76
  6. Step 6: Final answer
    x = 344,521.80

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Double scale
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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.