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Finding the Fourth Proportional to 507,729, 700,670.88 and 281,379.36

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Solution

The fourth proportional to 507,729, 700,670.88 and 281,379.36 is: 388,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,729 : 700,670.88 = 281,379.36 : x
  2. Step 2: Convert to fraction form
    507,729/700,670.88 = 281,379.36/x
  3. Step 3: Cross multiply
    507,729x = 700,670.88 × 281,379.36
  4. Step 4: Simplify right side
    507,729x = 197,154,323,785.04
  5. Step 5: Solve for x
    x = 197,154,323,785.04/507,729
  6. Step 6: Final answer
    x = 388,306.21

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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.