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Finding the Fourth Proportional to 678,908.10, 1,018,362 and 173,470.03

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Solution

The fourth proportional to 678,908.10, 1,018,362 and 173,470.03 is: 260,205.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,908.10 : 1,018,362 = 173,470.03 : x
  2. Step 2: Convert to fraction form
    678,908.10/1,018,362 = 173,470.03/x
  3. Step 3: Cross multiply
    678,908.10x = 1,018,362 × 173,470.03
  4. Step 4: Simplify right side
    678,908.10x = 176,655,286,690.86
  5. Step 5: Solve for x
    x = 176,655,286,690.86/678,908.10
  6. Step 6: Final answer
    x = 260,205.01

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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.