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Finding the Fourth Proportional to 634,304.72, 949,590.82 and 423,419.60

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Solution

The fourth proportional to 634,304.72, 949,590.82 and 423,419.60 is: 633,883.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,304.72 : 949,590.82 = 423,419.60 : x
  2. Step 2: Convert to fraction form
    634,304.72/949,590.82 = 423,419.60/x
  3. Step 3: Cross multiply
    634,304.72x = 949,590.82 × 423,419.60
  4. Step 4: Simplify right side
    634,304.72x = 402,075,365,168.07
  5. Step 5: Solve for x
    x = 402,075,365,168.07/634,304.72
  6. Step 6: Final answer
    x = 633,883.61

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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.