Home / 8,420,045.54-11,619,639.68-4,698,836.78

Finding the Fourth Proportional to 8,420,045.54, 11,619,639.68 and 4,698,836.78

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Solution

The fourth proportional to 8,420,045.54, 11,619,639.68 and 4,698,836.78 is: 6,484,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420,045.54 : 11,619,639.68 = 4,698,836.78 : x
  2. Step 2: Convert to fraction form
    8,420,045.54/11,619,639.68 = 4,698,836.78/x
  3. Step 3: Cross multiply
    8,420,045.54x = 11,619,639.68 × 4,698,836.78
  4. Step 4: Simplify right side
    8,420,045.54x = 54,598,790,217,139.05
  5. Step 5: Solve for x
    x = 54,598,790,217,139.05/8,420,045.54
  6. Step 6: Final answer
    x = 6,484,381.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.