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Finding the Fourth Proportional to 404,603.80, 606,387.30 and 360,021.40

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Solution

The fourth proportional to 404,603.80, 606,387.30 and 360,021.40 is: 539,570.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,603.80 : 606,387.30 = 360,021.40 : x
  2. Step 2: Convert to fraction form
    404,603.80/606,387.30 = 360,021.40/x
  3. Step 3: Cross multiply
    404,603.80x = 606,387.30 × 360,021.40
  4. Step 4: Simplify right side
    404,603.80x = 218,312,404,688.22
  5. Step 5: Solve for x
    x = 218,312,404,688.22/404,603.80
  6. Step 6: Final answer
    x = 539,570.82

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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.