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Finding the Fourth Proportional to 655,007.40, 980,178.30 and 454,386.60

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Solution

The fourth proportional to 655,007.40, 980,178.30 and 454,386.60 is: 679,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,007.40 : 980,178.30 = 454,386.60 : x
  2. Step 2: Convert to fraction form
    655,007.40/980,178.30 = 454,386.60/x
  3. Step 3: Cross multiply
    655,007.40x = 980,178.30 × 454,386.60
  4. Step 4: Simplify right side
    655,007.40x = 445,379,885,130.78
  5. Step 5: Solve for x
    x = 445,379,885,130.78/655,007.40
  6. Step 6: Final answer
    x = 679,961.61

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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.