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Finding the Fourth Proportional to 634,254.72, 949,515.84 and 423,369.60

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Solution

The fourth proportional to 634,254.72, 949,515.84 and 423,369.60 is: 633,808.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,254.72 : 949,515.84 = 423,369.60 : x
  2. Step 2: Convert to fraction form
    634,254.72/949,515.84 = 423,369.60/x
  3. Step 3: Cross multiply
    634,254.72x = 949,515.84 × 423,369.60
  4. Step 4: Simplify right side
    634,254.72x = 401,996,141,374.46
  5. Step 5: Solve for x
    x = 401,996,141,374.46/634,254.72
  6. Step 6: Final answer
    x = 633,808.67

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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.