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Finding the Fourth Proportional to 635,810.96, 877,804.48 and 421,135.04

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Solution

The fourth proportional to 635,810.96, 877,804.48 and 421,135.04 is: 581,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,810.96 : 877,804.48 = 421,135.04 : x
  2. Step 2: Convert to fraction form
    635,810.96/877,804.48 = 421,135.04/x
  3. Step 3: Cross multiply
    635,810.96x = 877,804.48 × 421,135.04
  4. Step 4: Simplify right side
    635,810.96x = 369,674,224,796.98
  5. Step 5: Solve for x
    x = 369,674,224,796.98/635,810.96
  6. Step 6: Final answer
    x = 581,421.60

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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.