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Finding the Fourth Proportional to 633,440.89, 874,148.66 and 346,965.76

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Solution

The fourth proportional to 633,440.89, 874,148.66 and 346,965.76 is: 478,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,440.89 : 874,148.66 = 346,965.76 : x
  2. Step 2: Convert to fraction form
    633,440.89/874,148.66 = 346,965.76/x
  3. Step 3: Cross multiply
    633,440.89x = 874,148.66 × 346,965.76
  4. Step 4: Simplify right side
    633,440.89x = 303,299,654,169.88
  5. Step 5: Solve for x
    x = 303,299,654,169.88/633,440.89
  6. Step 6: Final answer
    x = 478,812.88

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1.5x scale

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.