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Finding the Fourth Proportional to 404,090.75, 601,365.00 and 390,635.84

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Solution

The fourth proportional to 404,090.75, 601,365.00 and 390,635.84 is: 581,341.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,090.75 : 601,365.00 = 390,635.84 : x
  2. Step 2: Convert to fraction form
    404,090.75/601,365.00 = 390,635.84/x
  3. Step 3: Cross multiply
    404,090.75x = 601,365.00 × 390,635.84
  4. Step 4: Simplify right side
    404,090.75x = 234,914,722,692.57
  5. Step 5: Solve for x
    x = 234,914,722,692.57/404,090.75
  6. Step 6: Final answer
    x = 581,341.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.