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Finding the Fourth Proportional to 634,007.34, 874,419.96 and 557,362.56

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Solution

The fourth proportional to 634,007.34, 874,419.96 and 557,362.56 is: 768,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,007.34 : 874,419.96 = 557,362.56 : x
  2. Step 2: Convert to fraction form
    634,007.34/874,419.96 = 557,362.56/x
  3. Step 3: Cross multiply
    634,007.34x = 874,419.96 × 557,362.56
  4. Step 4: Simplify right side
    634,007.34x = 487,368,947,420.70
  5. Step 5: Solve for x
    x = 487,368,947,420.70/634,007.34
  6. Step 6: Final answer
    x = 768,711.84

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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.