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Finding the Fourth Proportional to 401,146.40, 600,363.32 and 390,351.57

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Solution

The fourth proportional to 401,146.40, 600,363.32 and 390,351.57 is: 584,207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,146.40 : 600,363.32 = 390,351.57 : x
  2. Step 2: Convert to fraction form
    401,146.40/600,363.32 = 390,351.57/x
  3. Step 3: Cross multiply
    401,146.40x = 600,363.32 × 390,351.57
  4. Step 4: Simplify right side
    401,146.40x = 234,352,762,580.66
  5. Step 5: Solve for x
    x = 234,352,762,580.66/401,146.40
  6. Step 6: Final answer
    x = 584,207.57

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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.