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Finding the Fourth Proportional to 670,906.80, 1,006,360.20 and 404,530.20

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Solution

The fourth proportional to 670,906.80, 1,006,360.20 and 404,530.20 is: 606,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,906.80 : 1,006,360.20 = 404,530.20 : x
  2. Step 2: Convert to fraction form
    670,906.80/1,006,360.20 = 404,530.20/x
  3. Step 3: Cross multiply
    670,906.80x = 1,006,360.20 × 404,530.20
  4. Step 4: Simplify right side
    670,906.80x = 407,103,092,978.04
  5. Step 5: Solve for x
    x = 407,103,092,978.04/670,906.80
  6. Step 6: Final answer
    x = 606,795.30

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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.