Home / 522,097.76-720,450.90-289,531.38

Finding the Fourth Proportional to 522,097.76, 720,450.90 and 289,531.38

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Solution

The fourth proportional to 522,097.76, 720,450.90 and 289,531.38 is: 399,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,097.76 : 720,450.90 = 289,531.38 : x
  2. Step 2: Convert to fraction form
    522,097.76/720,450.90 = 289,531.38/x
  3. Step 3: Cross multiply
    522,097.76x = 720,450.90 × 289,531.38
  4. Step 4: Simplify right side
    522,097.76x = 208,593,143,299.24
  5. Step 5: Solve for x
    x = 208,593,143,299.24/522,097.76
  6. Step 6: Final answer
    x = 399,528.90

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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.