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Finding the Fourth Proportional to 404,580.20, 606,870.30 and 402,247.40

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Solution

The fourth proportional to 404,580.20, 606,870.30 and 402,247.40 is: 603,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,580.20 : 606,870.30 = 402,247.40 : x
  2. Step 2: Convert to fraction form
    404,580.20/606,870.30 = 402,247.40/x
  3. Step 3: Cross multiply
    404,580.20x = 606,870.30 × 402,247.40
  4. Step 4: Simplify right side
    404,580.20x = 244,112,000,312.22
  5. Step 5: Solve for x
    x = 244,112,000,312.22/404,580.20
  6. Step 6: Final answer
    x = 603,371.10

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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.