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Finding the Fourth Proportional to 668,089.26, 1,000,340.55 and 561,801.06

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Solution

The fourth proportional to 668,089.26, 1,000,340.55 and 561,801.06 is: 841,193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,089.26 : 1,000,340.55 = 561,801.06 : x
  2. Step 2: Convert to fraction form
    668,089.26/1,000,340.55 = 561,801.06/x
  3. Step 3: Cross multiply
    668,089.26x = 1,000,340.55 × 561,801.06
  4. Step 4: Simplify right side
    668,089.26x = 561,992,381,350.98
  5. Step 5: Solve for x
    x = 561,992,381,350.98/668,089.26
  6. Step 6: Final answer
    x = 841,193.56

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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.