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Finding the Fourth Proportional to 404,546.40, 605,653.20 and 357,890.40

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Solution

The fourth proportional to 404,546.40, 605,653.20 and 357,890.40 is: 535,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,546.40 : 605,653.20 = 357,890.40 : x
  2. Step 2: Convert to fraction form
    404,546.40/605,653.20 = 357,890.40/x
  3. Step 3: Cross multiply
    404,546.40x = 605,653.20 × 357,890.40
  4. Step 4: Simplify right side
    404,546.40x = 216,757,466,009.28
  5. Step 5: Solve for x
    x = 216,757,466,009.28/404,546.40
  6. Step 6: Final answer
    x = 535,803.72

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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.