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Finding the Fourth Proportional to 633,902.71, 874,746.08 and 347,402.47

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Solution

The fourth proportional to 633,902.71, 874,746.08 and 347,402.47 is: 479,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,902.71 : 874,746.08 = 347,402.47 : x
  2. Step 2: Convert to fraction form
    633,902.71/874,746.08 = 347,402.47/x
  3. Step 3: Cross multiply
    633,902.71x = 874,746.08 × 347,402.47
  4. Step 4: Simplify right side
    633,902.71x = 303,888,948,814.82
  5. Step 5: Solve for x
    x = 303,888,948,814.82/633,902.71
  6. Step 6: Final answer
    x = 479,393.67

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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.