Home / 678,554.20-1,017,831.30-620,493.40

Finding the Fourth Proportional to 678,554.20, 1,017,831.30 and 620,493.40

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Solution

The fourth proportional to 678,554.20, 1,017,831.30 and 620,493.40 is: 930,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,554.20 : 1,017,831.30 = 620,493.40 : x
  2. Step 2: Convert to fraction form
    678,554.20/1,017,831.30 = 620,493.40/x
  3. Step 3: Cross multiply
    678,554.20x = 1,017,831.30 × 620,493.40
  4. Step 4: Simplify right side
    678,554.20x = 631,557,603,963.42
  5. Step 5: Solve for x
    x = 631,557,603,963.42/678,554.20
  6. Step 6: Final answer
    x = 930,740.10

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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.