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Finding the Fourth Proportional to 531,750.40, 795,681.60 and 391,782.40

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Solution

The fourth proportional to 531,750.40, 795,681.60 and 391,782.40 is: 586,241.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,750.40 : 795,681.60 = 391,782.40 : x
  2. Step 2: Convert to fraction form
    531,750.40/795,681.60 = 391,782.40/x
  3. Step 3: Cross multiply
    531,750.40x = 795,681.60 × 391,782.40
  4. Step 4: Simplify right side
    531,750.40x = 311,734,046,883.84
  5. Step 5: Solve for x
    x = 311,734,046,883.84/531,750.40
  6. Step 6: Final answer
    x = 586,241.30

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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.