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Finding the Fourth Proportional to 1,755,216, 2,632,824 and 425,520

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Solution

The fourth proportional to 1,755,216, 2,632,824 and 425,520 is: 638,280

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755,216 : 2,632,824 = 425,520 : x
  2. Step 2: Convert to fraction form
    1,755,216/2,632,824 = 425,520/x
  3. Step 3: Cross multiply
    1,755,216x = 2,632,824 × 425,520
  4. Step 4: Simplify right side
    1,755,216x = 1,120,319,268,480
  5. Step 5: Solve for x
    x = 1,120,319,268,480/1,755,216
  6. Step 6: Final answer
    x = 638,280

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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.