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Finding the Fourth Proportional to 400,809.18, 601,618.92 and 355,513.92

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Solution

The fourth proportional to 400,809.18, 601,618.92 and 355,513.92 is: 533,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,809.18 : 601,618.92 = 355,513.92 : x
  2. Step 2: Convert to fraction form
    400,809.18/601,618.92 = 355,513.92/x
  3. Step 3: Cross multiply
    400,809.18x = 601,618.92 × 355,513.92
  4. Step 4: Simplify right side
    400,809.18x = 213,883,900,595.37
  5. Step 5: Solve for x
    x = 213,883,900,595.37/400,809.18
  6. Step 6: Final answer
    x = 533,630.24

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1.5x scale

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.