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Finding the Fourth Proportional to 633,991.32, 873,437.58 and 442,701.72

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Solution

The fourth proportional to 633,991.32, 873,437.58 and 442,701.72 is: 609,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,991.32 : 873,437.58 = 442,701.72 : x
  2. Step 2: Convert to fraction form
    633,991.32/873,437.58 = 442,701.72/x
  3. Step 3: Cross multiply
    633,991.32x = 873,437.58 × 442,701.72
  4. Step 4: Simplify right side
    633,991.32x = 386,672,318,978.64
  5. Step 5: Solve for x
    x = 386,672,318,978.64/633,991.32
  6. Step 6: Final answer
    x = 609,901.60

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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.