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Finding the Fourth Proportional to 552,090.64, 761,865.40 and 307,074.12

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Solution

The fourth proportional to 552,090.64, 761,865.40 and 307,074.12 is: 423,751.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,090.64 : 761,865.40 = 307,074.12 : x
  2. Step 2: Convert to fraction form
    552,090.64/761,865.40 = 307,074.12/x
  3. Step 3: Cross multiply
    552,090.64x = 761,865.40 × 307,074.12
  4. Step 4: Simplify right side
    552,090.64x = 233,949,147,263.45
  5. Step 5: Solve for x
    x = 233,949,147,263.45/552,090.64
  6. Step 6: Final answer
    x = 423,751.34

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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.