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Finding the Fourth Proportional to 622,384.88, 858,908.12 and 380,663.04

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Solution

The fourth proportional to 622,384.88, 858,908.12 and 380,663.04 is: 525,325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,384.88 : 858,908.12 = 380,663.04 : x
  2. Step 2: Convert to fraction form
    622,384.88/858,908.12 = 380,663.04/x
  3. Step 3: Cross multiply
    622,384.88x = 858,908.12 × 380,663.04
  4. Step 4: Simplify right side
    622,384.88x = 326,954,576,039.89
  5. Step 5: Solve for x
    x = 326,954,576,039.89/622,384.88
  6. Step 6: Final answer
    x = 525,325.38

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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.