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Finding the Fourth Proportional to 679,748.64, 937,787.64 and 389,204.94

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Solution

The fourth proportional to 679,748.64, 937,787.64 and 389,204.94 is: 536,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,748.64 : 937,787.64 = 389,204.94 : x
  2. Step 2: Convert to fraction form
    679,748.64/937,787.64 = 389,204.94/x
  3. Step 3: Cross multiply
    679,748.64x = 937,787.64 × 389,204.94
  4. Step 4: Simplify right side
    679,748.64x = 364,991,582,158.94
  5. Step 5: Solve for x
    x = 364,991,582,158.94/679,748.64
  6. Step 6: Final answer
    x = 536,950.81

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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.