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Finding the Fourth Proportional to 547,040.89, 754,321.30 and 355,699.45

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Solution

The fourth proportional to 547,040.89, 754,321.30 and 355,699.45 is: 490,478.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,040.89 : 754,321.30 = 355,699.45 : x
  2. Step 2: Convert to fraction form
    547,040.89/754,321.30 = 355,699.45/x
  3. Step 3: Cross multiply
    547,040.89x = 754,321.30 × 355,699.45
  4. Step 4: Simplify right side
    547,040.89x = 268,311,671,533.29
  5. Step 5: Solve for x
    x = 268,311,671,533.29/547,040.89
  6. Step 6: Final answer
    x = 490,478.27

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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.