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Finding the Fourth Proportional to 404,890.30, 607,335.45 and 310,411.90

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Solution

The fourth proportional to 404,890.30, 607,335.45 and 310,411.90 is: 465,617.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,890.30 : 607,335.45 = 310,411.90 : x
  2. Step 2: Convert to fraction form
    404,890.30/607,335.45 = 310,411.90/x
  3. Step 3: Cross multiply
    404,890.30x = 607,335.45 × 310,411.90
  4. Step 4: Simplify right side
    404,890.30x = 188,524,150,971.86
  5. Step 5: Solve for x
    x = 188,524,150,971.86/404,890.30
  6. Step 6: Final answer
    x = 465,617.85

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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.