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Finding the Fourth Proportional to 522,098.76, 720,452.28 and 289,532.38

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Solution

The fourth proportional to 522,098.76, 720,452.28 and 289,532.38 is: 399,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,098.76 : 720,452.28 = 289,532.38 : x
  2. Step 2: Convert to fraction form
    522,098.76/720,452.28 = 289,532.38/x
  3. Step 3: Cross multiply
    522,098.76x = 720,452.28 × 289,532.38
  4. Step 4: Simplify right side
    522,098.76x = 208,594,263,304.83
  5. Step 5: Solve for x
    x = 208,594,263,304.83/522,098.76
  6. Step 6: Final answer
    x = 399,530.28

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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.