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Finding the Fourth Proportional to 401,140.58, 600,354.61 and 390,345.76

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Solution

The fourth proportional to 401,140.58, 600,354.61 and 390,345.76 is: 584,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,140.58 : 600,354.61 = 390,345.76 : x
  2. Step 2: Convert to fraction form
    401,140.58/600,354.61 = 390,345.76/x
  3. Step 3: Cross multiply
    401,140.58x = 600,354.61 × 390,345.76
  4. Step 4: Simplify right side
    401,140.58x = 234,345,874,033.20
  5. Step 5: Solve for x
    x = 234,345,874,033.20/401,140.58
  6. Step 6: Final answer
    x = 584,198.87

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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.