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Finding the Fourth Proportional to 423,046.80, 634,570.20 and 404,384.40

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Solution

The fourth proportional to 423,046.80, 634,570.20 and 404,384.40 is: 606,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,046.80 : 634,570.20 = 404,384.40 : x
  2. Step 2: Convert to fraction form
    423,046.80/634,570.20 = 404,384.40/x
  3. Step 3: Cross multiply
    423,046.80x = 634,570.20 × 404,384.40
  4. Step 4: Simplify right side
    423,046.80x = 256,610,289,584.88
  5. Step 5: Solve for x
    x = 256,610,289,584.88/423,046.80
  6. Step 6: Final answer
    x = 606,576.60

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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.