Home / 521,972.94-720,310.40-307,126.92

Finding the Fourth Proportional to 521,972.94, 720,310.40 and 307,126.92

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Solution

The fourth proportional to 521,972.94, 720,310.40 and 307,126.92 is: 423,827.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,972.94 : 720,310.40 = 307,126.92 : x
  2. Step 2: Convert to fraction form
    521,972.94/720,310.40 = 307,126.92/x
  3. Step 3: Cross multiply
    521,972.94x = 720,310.40 × 307,126.92
  4. Step 4: Simplify right side
    521,972.94x = 221,226,714,595.97
  5. Step 5: Solve for x
    x = 221,226,714,595.97/521,972.94
  6. Step 6: Final answer
    x = 423,827.94

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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.