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Finding the Fourth Proportional to 622,894.40, 934,341.60 and 423,828.80

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Solution

The fourth proportional to 622,894.40, 934,341.60 and 423,828.80 is: 635,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,894.40 : 934,341.60 = 423,828.80 : x
  2. Step 2: Convert to fraction form
    622,894.40/934,341.60 = 423,828.80/x
  3. Step 3: Cross multiply
    622,894.40x = 934,341.60 × 423,828.80
  4. Step 4: Simplify right side
    622,894.40x = 396,000,879,118.08
  5. Step 5: Solve for x
    x = 396,000,879,118.08/622,894.40
  6. Step 6: Final answer
    x = 635,743.20

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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.