Home / 678,681.50-1,018,021.28-173,242.67

Finding the Fourth Proportional to 678,681.50, 1,018,021.28 and 173,242.67

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Solution

The fourth proportional to 678,681.50, 1,018,021.28 and 173,242.67 is: 259,863.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,681.50 : 1,018,021.28 = 173,242.67 : x
  2. Step 2: Convert to fraction form
    678,681.50/1,018,021.28 = 173,242.67/x
  3. Step 3: Cross multiply
    678,681.50x = 1,018,021.28 × 173,242.67
  4. Step 4: Simplify right side
    678,681.50x = 176,364,718,707.70
  5. Step 5: Solve for x
    x = 176,364,718,707.70/678,681.50
  6. Step 6: Final answer
    x = 259,863.75

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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.