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Finding the Fourth Proportional to 539,621.13, 744,740.15 and 448,816.89

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Solution

The fourth proportional to 539,621.13, 744,740.15 and 448,816.89 is: 619,419.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,621.13 : 744,740.15 = 448,816.89 : x
  2. Step 2: Convert to fraction form
    539,621.13/744,740.15 = 448,816.89/x
  3. Step 3: Cross multiply
    539,621.13x = 744,740.15 × 448,816.89
  4. Step 4: Simplify right side
    539,621.13x = 334,251,955,737.05
  5. Step 5: Solve for x
    x = 334,251,955,737.05/539,621.13
  6. Step 6: Final answer
    x = 619,419.69

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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.