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Finding the Fourth Proportional to 455,429.55, 681,915.53 and 455,429.55

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Solution

The fourth proportional to 455,429.55, 681,915.53 and 455,429.55 is: 681,915.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,429.55 : 681,915.53 = 455,429.55 : x
  2. Step 2: Convert to fraction form
    455,429.55/681,915.53 = 455,429.55/x
  3. Step 3: Cross multiply
    455,429.55x = 681,915.53 × 455,429.55
  4. Step 4: Simplify right side
    455,429.55x = 310,564,480,688.76
  5. Step 5: Solve for x
    x = 310,564,480,688.76/455,429.55
  6. Step 6: Final answer
    x = 681,915.53

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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.