Home / 678,590.78-1,017,921.21-173,156.18

Finding the Fourth Proportional to 678,590.78, 1,017,921.21 and 173,156.18

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Solution

The fourth proportional to 678,590.78, 1,017,921.21 and 173,156.18 is: 259,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,590.78 : 1,017,921.21 = 173,156.18 : x
  2. Step 2: Convert to fraction form
    678,590.78/1,017,921.21 = 173,156.18/x
  3. Step 3: Cross multiply
    678,590.78x = 1,017,921.21 × 173,156.18
  4. Step 4: Simplify right side
    678,590.78x = 176,259,348,264.58
  5. Step 5: Solve for x
    x = 176,259,348,264.58/678,590.78
  6. Step 6: Final answer
    x = 259,743.21

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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.