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Finding the Fourth Proportional to 818,578.92, 1,129,673.74 and 456,002.34

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Solution

The fourth proportional to 818,578.92, 1,129,673.74 and 456,002.34 is: 629,302.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,578.92 : 1,129,673.74 = 456,002.34 : x
  2. Step 2: Convert to fraction form
    818,578.92/1,129,673.74 = 456,002.34/x
  3. Step 3: Cross multiply
    818,578.92x = 1,129,673.74 × 456,002.34
  4. Step 4: Simplify right side
    818,578.92x = 515,133,868,876.55
  5. Step 5: Solve for x
    x = 515,133,868,876.55/818,578.92
  6. Step 6: Final answer
    x = 629,302.63

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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.