Home / 678,963.38-1,018,666.20-323,931.44

Finding the Fourth Proportional to 678,963.38, 1,018,666.20 and 323,931.44

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Solution

The fourth proportional to 678,963.38, 1,018,666.20 and 323,931.44 is: 486,002.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,963.38 : 1,018,666.20 = 323,931.44 : x
  2. Step 2: Convert to fraction form
    678,963.38/1,018,666.20 = 323,931.44/x
  3. Step 3: Cross multiply
    678,963.38x = 1,018,666.20 × 323,931.44
  4. Step 4: Simplify right side
    678,963.38x = 329,978,009,045.33
  5. Step 5: Solve for x
    x = 329,978,009,045.33/678,963.38
  6. Step 6: Final answer
    x = 486,002.66

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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.