Home / 678,828.40-1,018,293.63-205,551.88

Finding the Fourth Proportional to 678,828.40, 1,018,293.63 and 205,551.88

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Solution

The fourth proportional to 678,828.40, 1,018,293.63 and 205,551.88 is: 308,343.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,828.40 : 1,018,293.63 = 205,551.88 : x
  2. Step 2: Convert to fraction form
    678,828.40/1,018,293.63 = 205,551.88/x
  3. Step 3: Cross multiply
    678,828.40x = 1,018,293.63 × 205,551.88
  4. Step 4: Simplify right side
    678,828.40x = 209,312,170,038.52
  5. Step 5: Solve for x
    x = 209,312,170,038.52/678,828.40
  6. Step 6: Final answer
    x = 308,343.27

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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.