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Finding the Fourth Proportional to 661,327.78, 912,703.70 and 374,817.10

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Solution

The fourth proportional to 661,327.78, 912,703.70 and 374,817.10 is: 517,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,327.78 : 912,703.70 = 374,817.10 : x
  2. Step 2: Convert to fraction form
    661,327.78/912,703.70 = 374,817.10/x
  3. Step 3: Cross multiply
    661,327.78x = 912,703.70 × 374,817.10
  4. Step 4: Simplify right side
    661,327.78x = 342,096,947,555.67
  5. Step 5: Solve for x
    x = 342,096,947,555.67/661,327.78
  6. Step 6: Final answer
    x = 517,288.04

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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.