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Finding the Fourth Proportional to 448,470.06, 621,560.16 and 440,071.98

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Solution

The fourth proportional to 448,470.06, 621,560.16 and 440,071.98 is: 609,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,470.06 : 621,560.16 = 440,071.98 : x
  2. Step 2: Convert to fraction form
    448,470.06/621,560.16 = 440,071.98/x
  3. Step 3: Cross multiply
    448,470.06x = 621,560.16 × 440,071.98
  4. Step 4: Simplify right side
    448,470.06x = 273,531,210,300.32
  5. Step 5: Solve for x
    x = 273,531,210,300.32/448,470.06
  6. Step 6: Final answer
    x = 609,920.78

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.