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Finding the Fourth Proportional to 611,384.20, 917,076.30 and 569,912.20

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Solution

The fourth proportional to 611,384.20, 917,076.30 and 569,912.20 is: 854,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,384.20 : 917,076.30 = 569,912.20 : x
  2. Step 2: Convert to fraction form
    611,384.20/917,076.30 = 569,912.20/x
  3. Step 3: Cross multiply
    611,384.20x = 917,076.30 × 569,912.20
  4. Step 4: Simplify right side
    611,384.20x = 522,652,971,700.86
  5. Step 5: Solve for x
    x = 522,652,971,700.86/611,384.20
  6. Step 6: Final answer
    x = 854,868.30

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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.