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Finding the Fourth Proportional to 404,790.40, 606,796.80 and 314,783.20

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Solution

The fourth proportional to 404,790.40, 606,796.80 and 314,783.20 is: 471,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,790.40 : 606,796.80 = 314,783.20 : x
  2. Step 2: Convert to fraction form
    404,790.40/606,796.80 = 314,783.20/x
  3. Step 3: Cross multiply
    404,790.40x = 606,796.80 × 314,783.20
  4. Step 4: Simplify right side
    404,790.40x = 191,009,438,453.76
  5. Step 5: Solve for x
    x = 191,009,438,453.76/404,790.40
  6. Step 6: Final answer
    x = 471,872.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.