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Finding the Fourth Proportional to 561,551.20, 774,940.72 and 306,902.32

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Solution

The fourth proportional to 561,551.20, 774,940.72 and 306,902.32 is: 423,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,551.20 : 774,940.72 = 306,902.32 : x
  2. Step 2: Convert to fraction form
    561,551.20/774,940.72 = 306,902.32/x
  3. Step 3: Cross multiply
    561,551.20x = 774,940.72 × 306,902.32
  4. Step 4: Simplify right side
    561,551.20x = 237,831,104,830.47
  5. Step 5: Solve for x
    x = 237,831,104,830.47/561,551.20
  6. Step 6: Final answer
    x = 423,525.24

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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.