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Finding the Fourth Proportional to 469,620, 648,075.60 and 268,420.32

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Solution

The fourth proportional to 469,620, 648,075.60 and 268,420.32 is: 370,420.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,620 : 648,075.60 = 268,420.32 : x
  2. Step 2: Convert to fraction form
    469,620/648,075.60 = 268,420.32/x
  3. Step 3: Cross multiply
    469,620x = 648,075.60 × 268,420.32
  4. Step 4: Simplify right side
    469,620x = 173,956,659,936.19
  5. Step 5: Solve for x
    x = 173,956,659,936.19/469,620
  6. Step 6: Final answer
    x = 370,420.04

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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.