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Finding the Fourth Proportional to 603,485.70, 906,020.12 and 404,695.90

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Solution

The fourth proportional to 603,485.70, 906,020.12 and 404,695.90 is: 607,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,485.70 : 906,020.12 = 404,695.90 : x
  2. Step 2: Convert to fraction form
    603,485.70/906,020.12 = 404,695.90/x
  3. Step 3: Cross multiply
    603,485.70x = 906,020.12 × 404,695.90
  4. Step 4: Simplify right side
    603,485.70x = 366,662,627,881.51
  5. Step 5: Solve for x
    x = 366,662,627,881.51/603,485.70
  6. Step 6: Final answer
    x = 607,574.67

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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.