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Finding the Fourth Proportional to 755,720.80, 1,133,840.40 and 335,298.40

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Solution

The fourth proportional to 755,720.80, 1,133,840.40 and 335,298.40 is: 503,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,720.80 : 1,133,840.40 = 335,298.40 : x
  2. Step 2: Convert to fraction form
    755,720.80/1,133,840.40 = 335,298.40/x
  3. Step 3: Cross multiply
    755,720.80x = 1,133,840.40 × 335,298.40
  4. Step 4: Simplify right side
    755,720.80x = 380,174,871,975.36
  5. Step 5: Solve for x
    x = 380,174,871,975.36/755,720.80
  6. Step 6: Final answer
    x = 503,062.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.