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Finding the Fourth Proportional to 626,940.86, 865,443.22 and 423,267.65

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Solution

The fourth proportional to 626,940.86, 865,443.22 and 423,267.65 is: 584,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,940.86 : 865,443.22 = 423,267.65 : x
  2. Step 2: Convert to fraction form
    626,940.86/865,443.22 = 423,267.65/x
  3. Step 3: Cross multiply
    626,940.86x = 865,443.22 × 423,267.65
  4. Step 4: Simplify right side
    626,940.86x = 366,314,117,937.83
  5. Step 5: Solve for x
    x = 366,314,117,937.83/626,940.86
  6. Step 6: Final answer
    x = 584,288.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.