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Finding the Fourth Proportional to 408,001.40, 610,619.70 and 408,001.40

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Solution

The fourth proportional to 408,001.40, 610,619.70 and 408,001.40 is: 610,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,001.40 : 610,619.70 = 408,001.40 : x
  2. Step 2: Convert to fraction form
    408,001.40/610,619.70 = 408,001.40/x
  3. Step 3: Cross multiply
    408,001.40x = 610,619.70 × 408,001.40
  4. Step 4: Simplify right side
    408,001.40x = 249,133,692,467.58
  5. Step 5: Solve for x
    x = 249,133,692,467.58/408,001.40
  6. Step 6: Final answer
    x = 610,619.70

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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.