Home / 1,108,885.20-1,663,327.80-398,936.40

Finding the Fourth Proportional to 1,108,885.20, 1,663,327.80 and 398,936.40

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Solution

The fourth proportional to 1,108,885.20, 1,663,327.80 and 398,936.40 is: 598,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,885.20 : 1,663,327.80 = 398,936.40 : x
  2. Step 2: Convert to fraction form
    1,108,885.20/1,663,327.80 = 398,936.40/x
  3. Step 3: Cross multiply
    1,108,885.20x = 1,663,327.80 × 398,936.40
  4. Step 4: Simplify right side
    1,108,885.20x = 663,562,004,551.92
  5. Step 5: Solve for x
    x = 663,562,004,551.92/1,108,885.20
  6. Step 6: Final answer
    x = 598,404.60

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Double scale
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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.