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Finding the Fourth Proportional to 400,807.18, 601,615.92 and 355,511.92

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Solution

The fourth proportional to 400,807.18, 601,615.92 and 355,511.92 is: 533,627.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,807.18 : 601,615.92 = 355,511.92 : x
  2. Step 2: Convert to fraction form
    400,807.18/601,615.92 = 355,511.92/x
  3. Step 3: Cross multiply
    400,807.18x = 601,615.92 × 355,511.92
  4. Step 4: Simplify right side
    400,807.18x = 213,881,630,821.77
  5. Step 5: Solve for x
    x = 213,881,630,821.77/400,807.18
  6. Step 6: Final answer
    x = 533,627.24

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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.