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Finding the Fourth Proportional to 561,403.35, 774,737.60 and 306,749.07

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Solution

The fourth proportional to 561,403.35, 774,737.60 and 306,749.07 is: 423,314.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,403.35 : 774,737.60 = 306,749.07 : x
  2. Step 2: Convert to fraction form
    561,403.35/774,737.60 = 306,749.07/x
  3. Step 3: Cross multiply
    561,403.35x = 774,737.60 × 306,749.07
  4. Step 4: Simplify right side
    561,403.35x = 237,650,036,760.29
  5. Step 5: Solve for x
    x = 237,650,036,760.29/561,403.35
  6. Step 6: Final answer
    x = 423,314.25

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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.