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Finding the Fourth Proportional to 547,039.89, 754,319.93 and 355,698.45

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Solution

The fourth proportional to 547,039.89, 754,319.93 and 355,698.45 is: 490,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,039.89 : 754,319.93 = 355,698.45 : x
  2. Step 2: Convert to fraction form
    547,039.89/754,319.93 = 355,698.45/x
  3. Step 3: Cross multiply
    547,039.89x = 754,319.93 × 355,698.45
  4. Step 4: Simplify right side
    547,039.89x = 268,310,428,126.62
  5. Step 5: Solve for x
    x = 268,310,428,126.62/547,039.89
  6. Step 6: Final answer
    x = 490,476.90

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1.5x scale

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.