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Finding the Fourth Proportional to 643,507.62, 888,040.62 and 357,027.02

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Solution

The fourth proportional to 643,507.62, 888,040.62 and 357,027.02 is: 492,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,507.62 : 888,040.62 = 357,027.02 : x
  2. Step 2: Convert to fraction form
    643,507.62/888,040.62 = 357,027.02/x
  3. Step 3: Cross multiply
    643,507.62x = 888,040.62 × 357,027.02
  4. Step 4: Simplify right side
    643,507.62x = 317,054,495,087.50
  5. Step 5: Solve for x
    x = 317,054,495,087.50/643,507.62
  6. Step 6: Final answer
    x = 492,697.35

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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.