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Finding the Fourth Proportional to 404,537.70, 606,952.35 and 389,957.70

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Solution

The fourth proportional to 404,537.70, 606,952.35 and 389,957.70 is: 585,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,537.70 : 606,952.35 = 389,957.70 : x
  2. Step 2: Convert to fraction form
    404,537.70/606,952.35 = 389,957.70/x
  3. Step 3: Cross multiply
    404,537.70x = 606,952.35 × 389,957.70
  4. Step 4: Simplify right side
    404,537.70x = 236,685,742,415.60
  5. Step 5: Solve for x
    x = 236,685,742,415.60/404,537.70
  6. Step 6: Final answer
    x = 585,077.10

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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.