Home / 427,965.66-641,946.96-128,444.94

Finding the Fourth Proportional to 427,965.66, 641,946.96 and 128,444.94

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Solution

The fourth proportional to 427,965.66, 641,946.96 and 128,444.94 is: 192,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,965.66 : 641,946.96 = 128,444.94 : x
  2. Step 2: Convert to fraction form
    427,965.66/641,946.96 = 128,444.94/x
  3. Step 3: Cross multiply
    427,965.66x = 641,946.96 × 128,444.94
  4. Step 4: Simplify right side
    427,965.66x = 82,454,838,760.38
  5. Step 5: Solve for x
    x = 82,454,838,760.38/427,965.66
  6. Step 6: Final answer
    x = 192,666.95

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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.