Home / 521,972.10-720,668.54-400,896.95

Finding the Fourth Proportional to 521,972.10, 720,668.54 and 400,896.95

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Solution

The fourth proportional to 521,972.10, 720,668.54 and 400,896.95 is: 553,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,972.10 : 720,668.54 = 400,896.95 : x
  2. Step 2: Convert to fraction form
    521,972.10/720,668.54 = 400,896.95/x
  3. Step 3: Cross multiply
    521,972.10x = 720,668.54 × 400,896.95
  4. Step 4: Simplify right side
    521,972.10x = 288,913,817,045.85
  5. Step 5: Solve for x
    x = 288,913,817,045.85/521,972.10
  6. Step 6: Final answer
    x = 553,504.33

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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.