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Finding the Fourth Proportional to 561,353.67, 774,659.01 and 306,699.39

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Solution

The fourth proportional to 561,353.67, 774,659.01 and 306,699.39 is: 423,240.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,353.67 : 774,659.01 = 306,699.39 : x
  2. Step 2: Convert to fraction form
    561,353.67/774,659.01 = 306,699.39/x
  3. Step 3: Cross multiply
    561,353.67x = 774,659.01 × 306,699.39
  4. Step 4: Simplify right side
    561,353.67x = 237,587,445,825.00
  5. Step 5: Solve for x
    x = 237,587,445,825.00/561,353.67
  6. Step 6: Final answer
    x = 423,240.21

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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.